bowser: update audio_policy.conf

- remove deep_buffer
- update submix modules to only use 48000 sampling rates

Change-Id: Ib44a04e92d0d17413c8d2f085415c6d7a59aaa46
bowser: revert camera treated as back facing

Change-Id: I9bb33e899de2164f8813435fdd48e31b344248c3