* NXP PCF85063 Real Time Clock
Required properties:
-- compatible: Should contain "nxp,pcf85063".
+- compatible: Should one of contain:
+ "nxp,pcf85063",
+ "nxp,pcf85063a",
+ "nxp,pcf85063tp",
+ "microcrystal,rv8263"
- reg: I2C address for chip.
Optional property: