soc: swr-mstr-ctrl: add new lock to sync runtime_resume and runtime_suspend

runtime_suspend may get from multi functions and reslock is
unlock and lock inbetween which may cause clk count mismatch
with multi rutime_suspend called. Add new lock to make sure
runtime_suspend is run in sequence.

Change-Id: Ie465ded6dc1db1244035e9f4d216466b630df82b
Signed-off-by: Meng Wang <mengw@codeaurora.org>
Signed-off-by: Soumya Managoli <quic_c_smanag@quicinc.com>