dts:mc3: Added voltage regulator nodes
Added nodes for the generic voltages and three nodes for the eMMC and SD-Card (the SD-Card requires a 1V8 and 3V3 rail for the high-speed mode).
Added nodes for the generic voltages and three nodes for the eMMC and SD-Card (the SD-Card requires a 1V8 and 3V3 rail for the high-speed mode).