Fixed manifest for android-4.3_r2.1

Change-Id: If80b3a9540a83532de85226d79e5d196bfb51786

default.xml

@@ -25,7 +25,7 @@
   <project path="device/asus/deb" name="device/asus/deb" groups="device,flo" />
   <project path="device/asus/flo" name="device/asus/flo" groups="device,flo" />
   <project path="device/asus/flo-kernel" name="device/asus/flo-kernel" groups="device,flo" />
-  <project path="device/asus/grouper" name="device/asus/grouper" groups="device,grouper" />
+  <project path="device/asus/grouper" name="device/asus/grouper" groups="device,grouper" revision="refs/tags/android-4.3_r2.1_" />
   <project path="device/asus/tilapia" name="device/asus/tilapia" groups="device,grouper" />
   <project path="device/common" name="device/common" />
   <project path="device/generic/armv7-a-neon" name="device/generic/armv7-a-neon" groups="pdk" />