Merge "Don't update volume if volume level is same as current device volume."...

Merge "Don't update volume if volume level is same as current device volume." am: cc6d5581 am: a9f332b0

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Bluetooth/+/1168010

Change-Id: I87d35153266a3dce95108d1f074ee0fa7e2a740e