msm: vidc: Perform cache operations on all planes

Perform cache operations on all planes including buffer extradata
planes, since userspace may set cache flag on all planes.

Change-Id: I9cc6060ec7fb2626b4885c7df7592abae99fb955
Signed-off-by: Mihir Ganu <mganu@codeaurora.org>
Signed-off-by: Govindaraj Rajagopal <grajagop@codeaurora.org>