Code layout cleanup

- Fwd declare where possible
- List .h first in the .cpp to verify proper includes
- Remove hacky -internal.h file and move testBitInRange to a new component

Change-Id: I442248c4b32738c6c2af250f45d4c8822c862e08

modules/input/evdev/InputDeviceManager.cpp

@@ -17,10 +17,11 @@
 #define LOG_TAG "InputDeviceManager"
 //#define LOG_NDEBUG 0
 
+#include "InputDeviceManager.h"
+
 #include <utils/Log.h>
 
 #include "InputDevice.h"
-#include "InputDeviceManager.h"
 
 namespace android {