Add avrcp_device_fuzz.

This fuzz target exercises the avrcp bluetooth packet parser. Callbacks
are basic fakes that do nothing (as generally this is an interaction
layer with the JNI).

Bug: N/A
Test: m avrcp_device_fuzz
Change-Id: Ib78ea8cacf2c3ca18f8a515c8b37db2f976930bd