drm/rockchip: vop: Fix virtual stride calculation

vir_stride need number words of the virtual width, and fb->pitches
save bytes_per_pixel, so just div 4 switch to stride.

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
This commit is contained in:
Mark Yao 2015-06-26 18:07:25 +08:00
commit f1c79abef5