Fix packages/DeskClock to rely on support libs

Add explicit reference to support-compat and
support-media-compat to ensure their
resources are included in DeskClock.

Test: mmma packages/apps/DeskClock
BUG: 28983951
Change-Id: Ib21f05cc858be56153c3c01e4e647dca066212a7
diff --git a/Android.mk b/Android.mk
index e4fa273..bee9103 100644
--- a/Android.mk
+++ b/Android.mk
@@ -19,7 +19,8 @@
         android-support-design \
         android-support-percent \
         android-support-transition \
-        android-support-v4 \
+        android-support-compat \
+        android-support-media-compat \
         android-support-v13 \
         android-support-v14-preference \
         android-support-v7-appcompat \