problem:
scm calls to enable/disable SAFE signal introduced due to HW limitation
in some targets from ife causing overall system delay whenever
camera starts and other HW components also making scm calls.
solution:
prevent redundant SCM calls for SAFE signal.
CRs-Fixed: 3511194
Change-Id: Ib6692d599e9ec9e9182a9e6eb0aef52322cbfdef
Signed-off-by: Pranav Sanwal <quic_psanwal@quicinc.com>