Like LibreTech-CC, the USB0 needs the 5V regulator to be enabled to power the
devices on the P212 Reference Design based boards.

Fixes: b9f07cb4 ("ARM64: dts: meson-gxl-s905x-p212: enable the USB controller")
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Acked-by: NMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: NKevin Hilman <khilman@baylibre.com>