i9300: use unified init.smdk4x12.rc

Change-Id: I8a09a9f63d72d261b1cad647438194b30a9d20e8
i9300: add selinux policies

Change-Id: I0304c2efeb06b583a28ea9c9dcc874254ee3930f
i9300: audio: disable voicecall route on init and leaving incall state

Change-Id: I5e1ca99f19a715ef509825d46103c60f10d35ce2
i9300: selinux: remove vold rules

moved to external/sepolicy

Change-Id: I829824e38b0a98989b35acbfc89ea225b9ce198b
Merge branch 'cm-10.2' of github.com:CyanogenMod/android_device_samsung_i9300 into cm-10.2