msm: vidc: Fix multistream issues

This change is to fix issues reported when OUTPUT and OUTPUT2
ports enabled in Venus. In this case following are the rules
    - s_fmt on OUTPUT port updates OUTPUT port dimensions.
    - s_fmt on CAPTURE port updates CAPTURE port dimensions.
    - reconfig dimensions are always updated on OUTPUT port.
    - All clocks scaling, bus scaling uses max of both ports.
    - DCVS is based on reconfig, CAPTURE and OUTPUT port dims.

CRs-Fixed: 1044772
Change-Id: Ib45424c70f995d856ad27107ae3ea24a59ca4e74
Signed-off-by: Praneeth Paladugu <ppaladug@codeaurora.org>
Signed-off-by: Abdulla Anam <abdullahanam@codeaurora.org>