Fixed bug 3191 - haptic system on android?

Patch provided by jintiao and Milan Nikolic, thanks!

Android.mk

@@ -28,7 +28,7 @@ LOCAL_SRC_FILES := \
 	$(wildcard $(LOCAL_PATH)/src/events/*.c) \
 	$(wildcard $(LOCAL_PATH)/src/file/*.c) \
 	$(wildcard $(LOCAL_PATH)/src/haptic/*.c) \
-	$(wildcard $(LOCAL_PATH)/src/haptic/dummy/*.c) \
+	$(wildcard $(LOCAL_PATH)/src/haptic/android/*.c) \
 	$(wildcard $(LOCAL_PATH)/src/joystick/*.c) \
 	$(wildcard $(LOCAL_PATH)/src/joystick/android/*.c) \
 	$(wildcard $(LOCAL_PATH)/src/loadso/dlopen/*.c) \