fix PDK build

Change-Id: I6751522e11dbcad03522a2cb8714fb438ac9d9ca
diff --git a/device.mk b/device.mk
index f8794dd..5d54376 100644
--- a/device.mk
+++ b/device.mk
@@ -59,13 +59,16 @@
     frameworks/native/data/etc/android.hardware.camera.front.xml:system/etc/permissions/android.hardware.camera.front.xml \
     frameworks/native/data/etc/android.hardware.usb.accessory.xml:system/etc/permissions/android.hardware.usb.accessory.xml \
     frameworks/native/data/etc/android.hardware.usb.host.xml:system/etc/permissions/android.hardware.usb.host.xml \
-	packages/wallpapers/LivePicker/android.software.live_wallpaper.xml:system/etc/permissions/android.software.live_wallpaper.xml \
     frameworks/native/data/etc/android.hardware.location.gps.xml:system/etc/permissions/android.hardware.location.gps.xml \
     frameworks/native/data/etc/android.hardware.sensor.accelerometer.xml:system/etc/permissions/android.hardware.sensor.accelerometer.xml \
     frameworks/native/data/etc/android.hardware.sensor.barometer.xml:system/etc/permissions/android.hardware.sensor.barometer.xml \
     frameworks/native/data/etc/android.hardware.sensor.compass.xml:system/etc/permissions/android.hardware.sensor.compass.xml \
     frameworks/native/data/etc/android.hardware.sensor.gyroscope.xml:system/etc/permissions/android.hardware.sensor.gyroscope.xml \
-    frameworks/native/data/etc/android.hardware.sensor.light.xml:system/etc/permissions/android.hardware.sensor.light.xml \
+    frameworks/native/data/etc/android.hardware.sensor.light.xml:system/etc/permissions/android.hardware.sensor.light.xml
+
+
+PRODUCT_COPY_FILES += $(call add-to-product-copy-files-if-exists,\
+packages/wallpapers/LivePicker/android.software.live_wallpaper.xml:system/etc/permissions/android.software.live_wallpaper.xml)
 
 
 PRODUCT_COPY_FILES += \