i9305: fix dock audio, config cleanup

Change-Id: I03aee53eddfbaa7978c47321e306f490e5d56f33
Adjust headset mic audio settings

 - Increase headset_input parameter IN1L Volume to 28 in audio_hw.h to increase microphone gain

Change-Id: I1e45d03709f2fc650befca410f47f9a44340c41b
Merge upstream cm-10.1 changes