CHROMIUM: [media] rk3288-vpu: Use macros for frame size limits

CHROMIUM: [media] rk3288-vpu: Use macros for frame size limits

As a prerequisite for reusing those values in new code, this patch
creates appropriate macros for them and updates current code to use
them.

BUG=chromium:485409
TEST=vda/veatests, Chrome with crrev.com/1097913002.

Signed-off-by: Tomasz Figa <tfiga@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/269865
Reviewed-by: Pawel Osciak <posciak@chromium.org>
Trybot-Ready: Pawel Osciak <posciak@chromium.org>

Change-Id: I95b1afbeff91aeb71d1748bf05895e769385f76e
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Yakir Yang <ykk@rock-chips.com>