Add vintf fragment for default broadcastradio

Bug: b/145694104
Test: Build and boot emulator locally. Observe
that CarRadio app shows static data provided by
default broadcast radio.

Change-Id: Ia70e8a040cb281f3d0e8fc7f3a8dd25bcd6d09bd
Merged-In: Ia70e8a040cb281f3d0e8fc7f3a8dd25bcd6d09bd
2 files changed