Add a regulator over-current (OCP) notifier device along with
supply properties to map from PMIC peripherals to specific
regulator devices. This provides a mechanism to notify
consumers of a particular regulator when OCP occurs.
Also add a PMK8550 SDAM01 nvmem device and nvmem cell subnode.
This is needed by the OCP notifier device.
Change-Id: Ib81b066733c15038938bb22d7fd8bac22874aece