Don't continuously rebuild mediaextractor

Use LOCAL_REQUIRED_MODULES instead of LOCAL_ADDITIONAL_DEPENDENCIES to
remove the dependency on a phony module. LOCAL_ADDITIONAL_DEPENDENCIES
also rebuilds the objects when the dependency is dirty, instead of just
making sure mediaextractor-seccomp.policy is installed.

Change-Id: I0d21d4e874b55eadaf5dfb395a85c987392250b3
2 files changed