Move the external clock initialization code from probe() to a separate
function to improve readability. No functional change intended.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NAlexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: NSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@kernel.org>