ARM: dts: omap5: add support for control module wkup pad config

The pad configuration area under control module wkup has some miscellaneous
config registers, that are not pinmux related. Add a separate area for
these, and add support for syscon / clocks under this new area.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Tested-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>