To obtain exact pixel clocks, allow the DI clock selectors to influence
the PLLs that they are derived from.
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Tested-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NShawn Guo <shawn.guo@freescale.com>