Add SEpolicy for EVS stack

extracted from ChangeId: I9adc6a1cb27bac005693d6b58c1298894f2bb557
Changcheng Liu
enable evs-app for gordon_peak

Modified the change to keep the default driver hardware independent, and
added a policy for the sample driver that is hardware dependent.

Also adds the RC files necessary to allow the EVS modules to be part of
the boot time init process.  But only if the platform references them in
it's device.mk file.

bug: 38509679
Change-Id: I78e5a4cc4d8057d74432b5f85dd56737a9a4e996
Test: build and boot gordon_peak
11 files changed