msm: vidc: Reduce video core clock for encoding

After performance and power analysis, video core clock
should be reduced to 133MHz for 1080p@30fps load. With
this clock setting, camcorder end to end performance is
not impacted.

Change-Id: Iee0fa9ce20181935faceb7b833b1aa510bbc6976
Signed-off-by: Vinay Kalia <vkalia@codeaurora.org>