Fix Android input source checks

Input source types are not pure bit flags, they are combinations of
flags, so != 0 check was incorrect and resulted in crashes later, when
trying to obtain the device.

platform/android/java/src/org/godotengine/godot/GodotView.java

@@ -261,7 +261,7 @@ public class GodotView extends GLSurfaceView implements InputDeviceListener {
 		};
 
 		int source = event.getSource();
-		if ((source & InputDevice.SOURCE_JOYSTICK) != 0 || (source & InputDevice.SOURCE_DPAD) != 0 || (source & InputDevice.SOURCE_GAMEPAD) != 0) {
+		if ((source & InputDevice.SOURCE_JOYSTICK) == InputDevice.SOURCE_JOYSTICK || (source & InputDevice.SOURCE_DPAD) == InputDevice.SOURCE_DPAD || (source & InputDevice.SOURCE_GAMEPAD) == InputDevice.SOURCE_GAMEPAD) {
 
 			final int button = get_godot_button(keyCode);
 			final int device = find_joy_device(event.getDeviceId());
@@ -302,7 +302,7 @@ public class GodotView extends GLSurfaceView implements InputDeviceListener {
 		int source = event.getSource();
 		//Log.e(TAG, String.format("Key down! source %d, device %d, joystick %d, %d, %d", event.getDeviceId(), source, (source & InputDevice.SOURCE_JOYSTICK), (source & InputDevice.SOURCE_DPAD), (source & InputDevice.SOURCE_GAMEPAD)));
 
-		if ((source & InputDevice.SOURCE_JOYSTICK) != 0 || (source & InputDevice.SOURCE_DPAD) != 0 || (source & InputDevice.SOURCE_GAMEPAD) != 0) {
+		if ((source & InputDevice.SOURCE_JOYSTICK) == InputDevice.SOURCE_JOYSTICK || (source & InputDevice.SOURCE_DPAD) == InputDevice.SOURCE_DPAD || (source & InputDevice.SOURCE_GAMEPAD) == InputDevice.SOURCE_GAMEPAD) {
 
 			if (event.getRepeatCount() > 0) // ignore key echo
 				return true;