msm: vidc: Fix image version sys property processing

Venus image version is now reported through sys
property message which has different packet
structure and requires new processing.

CRs-fixed: 543466
Change-Id: I0083e1f5146d59eb311aa8e1b9b82ac5c777bbfc
Signed-off-by: Sachin Shah <sachins@codeaurora.org>