msmx7x30: Remove CWM leftovers

Change-Id: I28f6344253ffb4dd0204f9435b48a057fda70dea
audio_policy: Use 48kHz for a2dp output

* QCOM uses 48kHz instead of the standard 44.1kHz

Change-Id: Id3ab091e73c3e9c8c10c751d51f2030547a78a1c