Using dfu to OTA BT devices

#prebuild include $(CLEAR_VARS) LOCAL_MODULE := controllerota LOCAL_MODULE_OWNER := qcom LOCAL_MODULE_TAGS := optional LOCAL_MODULE_CLASS := APPS LOCAL_CERTIFICATE := platform LOCAL_DEX_PREOPT := false LOCAL_MODULE_SUFFIX := .apk LOCAL_SRC_FILES := system/priv-app/controllerota/controllerota.apk LOCAL_PRIVILEGED_MODULE := true

include $(BUILD_PREBUILT)

#redesign the broadcast and file path