msm: vidc: scale clocks based on codecs supported and load

Add codecs supported entry for each load in load frequency vector.
This will facilitate to identify venus clock frequencies for each
codec sessions & codecs.
For same amount of load (number of macro blocks per second), required clock
frequency may vary depending on codec and session type.
Read codecs supported entry for each load in load frequency table,
scale clocks appropriately based on codecs supported and load.

For example: H.263 VGA 30fps decoding requires 133 Mhz and HEVC VGA 30fps
decoding requires 200 Mhz.

Change-Id: I23eddbb791c65e7b290988e482c6acb816aa083d
Signed-off-by: Srinu Gorle <sgorle@codeaurora.org>