licensing: add missing license info to many Java files

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/DolphinApplication.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu;
 
 import android.app.Application;

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/activities/AppLinkActivity.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.activities;
 
 import android.content.BroadcastReceiver;

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/activities/ConvertActivity.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.activities;
 
 import android.content.Context;

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/activities/CustomFilePickerActivity.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.activities;
 
 import android.content.Intent;

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/activities/EmulationActivity.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.activities;
 
 import android.content.Context;

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/adapters/GameAdapter.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.adapters;
 
 import android.content.Context;

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/adapters/GameRowPresenter.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.adapters;
 
 import android.content.Context;

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/adapters/PlatformPagerAdapter.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.adapters;
 
 import android.content.Context;

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/adapters/SettingsRowPresenter.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.adapters;
 
 import android.content.res.Resources;

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/dialogs/AlertMessage.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.dialogs;
 
 import android.app.Dialog;

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/dialogs/GameDetailsDialog.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.dialogs;
 
 import android.app.Dialog;

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/dialogs/GamePropertiesDialog.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.dialogs;
 
 import android.app.Dialog;

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/dialogs/MotionAlertDialog.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.dialogs;
 
 import android.content.Context;

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/model/AbstractBooleanSetting.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.features.settings.model;
 
 public interface AbstractBooleanSetting extends AbstractSetting

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/model/AbstractFloatSetting.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.features.settings.model;
 
 public interface AbstractFloatSetting extends AbstractSetting

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/model/AbstractIntSetting.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.features.settings.model;
 
 public interface AbstractIntSetting extends AbstractSetting

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/model/AbstractLegacySetting.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.features.settings.model;
 
 public class AbstractLegacySetting implements AbstractSetting

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/model/AbstractSetting.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.features.settings.model;
 
 public interface AbstractSetting

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/model/AbstractStringSetting.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.features.settings.model;
 
 public interface AbstractStringSetting extends AbstractSetting

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/model/AdHocBooleanSetting.java

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 package org.dolphinemu.dolphinemu.features.settings.model;
 
 public class AdHocBooleanSetting implements AbstractBooleanSetting