msm: VPU: Support new clocks for HQV, FRC and QDSS

New clocks such as FRC and QDSS need to be handled in the VPU driver.
Updated implementation allows the vpu driver to check which clocks are
required in the system, based on device tree entries.

Change-Id: I87e6ae8de933e70b2f20636de95565ba511c5b4a
Signed-off-by: Stephane Viau <sviau@codeaurora.org>