Add device specific list of clocks required, and handle all clocks
in a single for loop. This avoids further code duplication when
adding i.MX 7 support.
Signed-off-by: NStefan Agner <stefan@agner.ch>
Reviewed-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NBoris Brezillon <boris.brezillon@free-electrons.com>