soc: qcom: glink: Reorganize glink lock hierarchy

Update the locking hierarchy to reflect the current and
future use-cases. This helps in avoiding deadlock due
to out-of-order locking scenario.

CRs-Fixed: 988266
Change-Id: Ib40da2ecd413e7712cacc9663394e725ebd64a0a
Signed-off-by: Chris Lew <clew@codeaurora.org>