msm: vidc: Fix out of bound read access in packetization

While sending config realtime property to firmware, there
is an out of bound read access because a bool variable is
cast to u32 and read. This change fixes the same.

Change-Id: I7960ea9becdf463fbfdc5e721890c5a2fa4a82a7
Signed-off-by: Arun Menon <avmenon@codeaurora.org>