universal7904: Use a shim for overriding g_sco_samplerate

* AOSP already provides a bt_wbs parameter, so why not use it to fix
  this issue in a treble compliant way?

Change-Id: I78d5d36044421daf99b8a13aa417060a3cf959a3
(cherry picked from commit 6cd8d1572beb64df26aec75cc24254f4eb77ee1b)
5 files changed