msm: vidc_3x: correct the flags set for bus mode

Currently the flags which are set based on the
property read on bus mode are not correct, as
a result of which the Venus buses are not voted
correctly and are always set to 0.

Initializing the flag based on the above read
will make the Venus buses to vote correctly and no
issue will be seen when the video is suspended
via power key press.

Change-Id: I0675f95267b4fe4a14138cbc4258282f81c52886
Signed-off-by: Paras Nagda <pnagda@codeaurora.org>