ARM: dts: imx6qp: correct IPU nodes

Reference them by handle and remove the changed clocks that are copied
from the downstream DT and are not part of the mainline binding.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
1 file changed