Jb mr1

smdk4412: use 2 channels on 480, 720 and 1080p (Originally commited by Daniel Hillenbrand of CyanogenMod) Also increased audio bitrate.

Add input device AUDIO_DEVICE_IN_BACK_MIC (Originally commited by markcs of CyanogenMod)

smdk4412: Force use of profile video size (Originally commited by Daniel Hillenbrand of CyanogenMod)