Create a null HIDL wrapper if AIDL is registered

On upgrading devices the codec mainline module needs to be able to
register either HIDL or AIDL based on a sysprop. When one is selected,
the other is registered with a small null implementation.

Test: m
Bug: none
Change-Id: Ic9b69da991e030d6abf6a3e90c99cc7181bfeb20
1 file changed