s4-common: SELinux enforcing

Change-Id: Ieffee695bd314541fbabb37e9dc9854628638ff1
s4-common: Build prima_wlan into kernel.

* Remove module defines as we no longer build prima_wlan as a module
* Increase ramdisk_offset to allow to support larger boot.img

Change-Id: Ic7679cfaf74db449fbb7d023ba6492e683787e27
Merge branch 'cm' into HEAD