msm: vidc: Fix instance formats initialization issue

Currently, in instance init, CAPTURE and OUTPUT formats are copied
from fixed indices. When formats struct enhanced with new formats,
it is possible to assign CAPTURE format on OUTPUT port. Hence derive
the formats with fourcc.

CRs-Fixed: 2048564
Change-Id: I6c31b1c68797dec9c7fbe58afc10be1221a20a6d
Signed-off-by: Praneeth Paladugu <ppaladug@codeaurora.org>
Signed-off-by: Santhosh Behara <santhoshbehara@codeaurora.org>
Signed-off-by: Praveen Chavan <pchavan@codeaurora.org>
Signed-off-by: Sanjay Singh <sisanj@codeaurora.org>