msm7x30: Add support for camcorder mic

* Fixes secondary mic on semc devices

Change-Id: I1f4d59004a7d56aab62860b5c77e3bd8e95a677c
audio/msm7x30: Sync audio_policy with upstream cm-11.0 ALSA

Need to fix the flags sometime

Change-Id: Id43e0d7068849b85e5c021b60eab4e6b2bf766a6