regulator: uniphier: Add binding for NX1 SoC

Update USB-VBUS binding document for UniPhier NX1 SoC.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/1634520605-16583-2-git-send-email-hayashi.kunihiko@socionext.com
Signed-off-by: Mark Brown <broonie@kernel.org>
1 file changed