selinux: CM policies are now inserted last

Inclusion of the makefile is done by the build system to enforce
the wanted order

Change-Id: I86d7c6fb08b6bb1f6e0385e951a54827345aaf84

Conflicts:
	config/common.mk
	sepolicy/sepolicy.mk
Update the GMS location provider name

Change-Id: I8703838c9c2ce703e32f358edc1f1d73558b47e0
selinux: Add CM-specific file_contexts

Change-Id: Ie70c59acedbb7be2f5b34a83c1d3d011f440ba05
selinux: Add missing seapp_contexts file

Change-Id: I6bda9e4876b9053ea16fe3c11c21b9c1e7acb17a