drm: Add alignment of start address of frame buffer

When the start address of frame buffer of each field is not
4k byte alignment, the size of frame buffer is adjusted and
the start address of frame buffer is set to 4k byte alignment.

Signed-off-by: Koji Matsuoka <koji.matsuoka.xm@renesas.com>
(cherry picked from commit 3265acd737ffda1922f41f56799e00189cd36f81)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
1 file changed