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
i9300: fstab cleanup

Change-Id: I1e1f1ff7cd052d5c010d956e71c74a650ec89a8f