clk: mmp: pxa168: add new clocks for peripherals

This commit adds three new clocks that previously didn't exist, but are
needed in order to match the clock parenting as described in the PXA168
datasheet.

Signed-off-by: Doug Brown <doug@schmorgal.com>
Link: https://lore.kernel.org/r/20220612192937.162952-5-doug@schmorgal.com


Signed-off-by: Stephen Boyd <sboyd@kernel.org>