linux-wandboard

OMAPDSS: APPLY: cleanup dss_mgr_start_update

dss_mgr_start_update() has a loop, of which sole purpose is to find the
manager used for this update. The whole loop is extra, as we already
know the manager.

Remove the loop.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>