subsystem: cleanup misc and make cpp a subsystem

Move a way from misc/ and put in its own subsystem to allow enhancements
in the future and make it a core part of Zephyr, not just something
misc.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

subsys/cpp/cpp_init_array.c

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2015 Wind River Systems, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/*
+ * @file
+ * @brief Execute initialization routines referenced in .init_array section
+ */
+
+typedef void (*func_ptr)(void);
+
+extern func_ptr __init_array_start[0];
+extern func_ptr __init_array_end[0];
+
+/**
+ * @brief Execute initialization routines referenced in .init_array section
+ *
+ * @return N/A
+ */
+void __do_init_array_aux(void)
+{
+	for (func_ptr *func = __init_array_start;
+		func < __init_array_end;
+		func++) {
+		(*func)();
+	}
+}