Revert "Disable design lib in master build file"

This reverts commit 988f263d5abef3488a5757f8f688953061d9403e.

Change-Id: Ieec3403b2f5976115aa9afe662bd6617ec86dd38
diff --git a/build/Android.mk b/build/Android.mk
index 04d4dca..5d36d14 100644
--- a/build/Android.mk
+++ b/build/Android.mk
@@ -112,7 +112,8 @@
     android-support-v13 \
     android-support-v17-leanback \
     android-support-multidex \
-    android-support-multidex-instrumentation
+    android-support-multidex-instrumentation \
+    android-support-design
 
 $(foreach lib, $(ANDROID_SUPPORT_LIBRARIES), $(eval $(call _package_sdk_library,$(lib))))