Build layoutlib create tests as part of sdk build. [DO NOT MERGE]

LayoutLib Create tests are now built whenever LayoutLib create is built.

Change-Id: Id215e8690e435019579dba1734090a0d585f37e1
(cherry picked from commit 4efe6264f1251fa200427f54ea6f5dd4c4d03665)

Author: deepanshu-

tools/layoutlib/create/Android.mk

@@ -26,3 +26,6 @@ LOCAL_MODULE := layoutlib_create
 
 include $(BUILD_HOST_JAVA_LIBRARY)
 
+# Build all sub-directories
+include $(call all-makefiles-under,$(LOCAL_PATH))
+