minigbm: rockchip: use height to calculate h_mbs

The block height should be calculated from the height,
not the width.

BUG=none
TEST=none

Change-Id: Ica4bca0831c12a2594e16c06c42074592a8fd560
Reviewed-on: https://chromium-review.googlesource.com/441910
Commit-Ready: Gurchetan Singh <gurchetansingh@chromium.org>
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
1 file changed