msm: cvp: cvp power management enhancement

Knowledge of break-down of CVP core sub-blocks cycle usage enables
driver to tune CVP clock and ddr vote in finer granularity. The change
is backward compatible with legacy power voting mechanism. The
enhancement only takes place when user mode provides extra knowledge
needed.

Change-Id: I596e2ad0e585723364e26db3547db41b1af45997
Signed-off-by: George Shen <sqiao@codeaurora.org>