smdk4412: use 2 channels on 480, 720 and 1080p

Change-Id: Id9ec89bd2ec1618f3c50e27ab96eb8cbf8af09ae
Merge remote-tracking branch 'cyan10.2/cm-10.2' into jb43
Merge branch 'jb43' of https://github.com/abun880007/android_device_samsung_smdk4412-common into jb43