ARM: OMAP: Fix missing channel parameter using
omap_set_dma_priority() in omapfb_main.c:

drivers/video/omap/omapfb_main.c: In function 'omapfb_do_probe':
drivers/video/omap/omapfb_main.c:1441: error: too few
arguments to function
         'omap_set_dma_priority'

omap_set_dma_priority() in dma.c wants a channel as first
parameter which is missing here. However, this is only used
on OMAP24xx, on OMAP1 it isn't. Therefore I don't know if 0
is correct here, it's
don't care for OMAP1. Please check.

Signed-off-by: Dirk Behme <dirk.behme_at_gmail.com>