uboot-imx

rockchip: rk3399-puma: enable fan53555 regulators in DTS

Now that we have FAN53555 support, we can enable the regulators in our
DTS.  To make these easier to identify on the U-Boot commandline, we
rename them to the names of the voltage rails they control.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>