msm: vidc: Fine tune PMS with on-target profiling

In Performance Monitoring System, before making clock decision
always follow the below order.

    - If client is starving for buffers, Increase clock.
    - If HW pending count is less, Decrease clock.
    - If none of above, vote for required clock.

Along with this, sanitize CF values from HW for better PMS algo.

CRs-Fixed: 2012520
Change-Id: I31822918013aebe60d7fdac9f91d4cca7bc92345
Signed-off-by: Praneeth Paladugu <ppaladug@codeaurora.org>