linux-phytec-fsl

OMAPDSS: remove omap_dss_device->channel field

The 'channel' field in struct omap_dss_device is no longer used, and can
be removed.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>