The DT binding doc references the max77802 clocks header file which makes
no sense since of course it doesn't contain data related to the regulators.

It's a copy and paste error, so add a reference to the correct header file.
Signed-off-by: NJavier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: NMark Brown <broonie@kernel.org>