SSM: Integrating the SSM driver code

This patch adds support for SSM driver which is
a framework to which a client can register itself specifying
different attributes and defining various permission levels associated
with different combination of attribute values and mode of the system.

CRs-Fixed: 970190
Change-Id: Ia030ebad56a22ba9103af17f6557c7906b762b76
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>
Signed-off-by: Manoj Prabhu B <bmanoj@codeaurora.org>