dt-bindings: marvell,pxa168: add clock ids for additional dividers

This adds a few new clocks divided from PLL1 and CLK32 that are
potentially used by a few peripherals with muxed clocks.

Signed-off-by: Doug Brown <doug@schmorgal.com>
Link: https://lore.kernel.org/r/20220612192937.162952-4-doug@schmorgal.com


Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>