msm: vidc: Do not update dimensions during sufficient event

During sequence changed event, we need not update port
dimensions internally. This should be done by client once
it receives sequence changed event.

CRs-Fixed: 2062059
Change-Id: If36b6461b96fba6233a398fd47539b4c7d86b188
Signed-off-by: Vaibhav Deshu Venkatesh <vdeshuve@codeaurora.org>