s4-common: update HDMI sysfs node permissions

Change-Id: I7b507c25408903cba84fcaa9ee11d93ec4f56c33
s4-common: move tombstones directory to /data

Change-Id: If2b7aba6752919cf82a8af65242da03f91008858
s4-common: mount firmware partitions

* Use radio and q6 firmware from on-device firmware partitions
* Allows different carriers to use the appropriate radio firmware

Change-Id: Ifec3671f164711e12204dbcde137eb648d9642b7

Conflicts:
	rootdir/etc/init.qcom.rc
s4-common: turn screen on when unplugging

Change-Id: Id2aa374aa12dd3c49addcde73113bc4913de2f3e
s4-common: remove unused entries

Change-Id: If1d7b050e23ccbc42415e89763ecb22c301cfad1