msm: vidc: Update clock calculations for a video session

Clock configurations are updated for a video session.
These configurations are needed to scale clocks optimally to
achieve best performance.

Change-Id: Ic335490d026645bf0a349fe70e02574b55ed594d
CRs-Fixed: 2181935
Signed-off-by: Shivendra Kakrania <shiven@codeaurora.org>