msm: vidc: Check maximum width capability of Q6

Maximum width capability check is required to take
care of indefinite behavior when a clip having width
more than Q6 capability is played. Also, make the
capability check generic for Q6 and Venus.

Change-Id: Ic10be0ad4434019fea45e7a090b21ba5cf54d9a6
CRs-fixed: 626642
Signed-off-by: Ravi Kiran Vonteddu <rvontedd@codeaurora.org>