Add missing dependency on aapt.

The missing dependency on AAPT did not cause build failures in AOSP,
because the build order happens to be such that AAPT is always built by
the time it's needed. But this is accidental and needs to be fixed.

Bug: 183010666
Bug: 132357300
Test: treehugger
Change-Id: I170e878bf36aafbdb93e9ba54faffd455d3e33c2
Merged-In: I8c78e48345bee5b77de41af03bdac77c402d04a1
diff --git a/core/app_prebuilt_internal.mk b/core/app_prebuilt_internal.mk
index 36b2067..829a640 100644
--- a/core/app_prebuilt_internal.mk
+++ b/core/app_prebuilt_internal.mk
@@ -123,6 +123,7 @@
   $(my_enforced_uses_libraries): PRIVATE_USES_LIBRARIES := $(my_uses_libs)
   $(my_enforced_uses_libraries): PRIVATE_OPTIONAL_USES_LIBRARIES := $(my_optional_uses_libs)
   $(my_enforced_uses_libraries): PRIVATE_RELAX_CHECK := $(my_relax_check)
+  $(my_enforced_uses_libraries): $(AAPT)
   $(my_enforced_uses_libraries): $(my_verify_script)
   $(my_enforced_uses_libraries): $(my_prebuilt_src_file)
 	@echo Verifying uses-libraries: $<