msm vidc: Initialise array elements

Array elements needs to be initialised as the
elements are not initialised by default and may
contain junk data which will lead to unexpected
behaviour.

Change-Id: Ifecb8065b09afcbf11a9dcfbf230403afcdb225d
CRs-Fixed: 2015789
Signed-off-by: Deepak Kushwah <dkushwah@codeaurora.org>
Signed-off-by: Shivendra Kakrania <shiven@codeaurora.org>