linux-phytec-ti

drm/tidss: dispc7: Ensure output width is divisible by 2

Ensure output width is divisible by 2. Actually this is only needed in
following cases:
- YUV output selected (BT656, BT1120)
- Dithering enabled
- TDM with TDMCycleFormat == 3
But for simplicity we enforce that always.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>