Make Launcher3 privileged module

Make privileged module to enable Launcher to render search widget
without granting permission to gmscore.

Change-Id: I920233ced18325ecc8db70e9227993913a2d9762
diff --git a/Android.mk b/Android.mk
index ad8ce02..202ff44 100644
--- a/Android.mk
+++ b/Android.mk
@@ -48,6 +48,7 @@
 LOCAL_SDK_VERSION := current
 LOCAL_MIN_SDK_VERSION := 21
 LOCAL_PACKAGE_NAME := Launcher3
+LOCAL_PRIVILEGED_MODULE := true
 LOCAL_OVERRIDES_PACKAGES := Home Launcher2
 
 LOCAL_FULL_LIBS_MANIFEST_FILES := $(LOCAL_PATH)/AndroidManifest-common.xml