hw/devices: Move Gamepad declarations into a new header

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190412165416.7977-8-philmd@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

include/hw/devices.h

@@ -26,7 +26,4 @@ void *tsc2005_init(qemu_irq pintdav);
 uint32_t tsc2005_txrx(void *opaque, uint32_t value, int len);
 void tsc2005_set_transform(void *opaque, MouseTransformInfo *info);
 
-/* stellaris_input.c */
-void stellaris_gamepad_init(int n, qemu_irq *irq, const int *keycode);
-
 #endif

include/hw/input/gamepad.h

@@ -0,0 +1,19 @@
+/*
+ * Gamepad style buttons connected to IRQ/GPIO lines
+ *
+ * Copyright (c) 2007 CodeSourcery.
+ * Written by Paul Brook
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef HW_INPUT_GAMEPAD_H
+#define HW_INPUT_GAMEPAD_H
+
+#include "hw/irq.h"
+
+/* stellaris_input.c */
+void stellaris_gamepad_init(int n, qemu_irq *irq, const int *keycode);
+
+#endif