msm: vidc: Update cycle count for vpx

VPx cycle requirement is not same as CABAC.
Hence update required as per system recommendation.

CRs-Fixed: 2560714
Change-Id: If600bc9c4abb364dba5f807c944976be992567c9
Signed-off-by: Chinmay Sawarkar <chinmays@codeaurora.org>