smdk4x12-common: fix bt tether

Change-Id: Ib19439e39ba767e57826722279faaed02046df2e
Merge "smdk4x12-common: fix bt tether" into cm-10.2
smdk4412: add AdvancedDisplay

This partially reverts commit 006c95d4f0c75b9bdf3827856dc694d973464520,
we want to reuse some of it

Change-Id: I84dd929e4cd895d4c4d0d6a81d476eaa1bcc4a0b
Merge branch 'cm-10.2' of github.com:CyanogenMod/android_device_samsung_smdk4412-common into cm-10.2