arm64: dts: rockchip: remove dvs2 pinctrl for pmic on rk3399 evb

DVS2 of pmic is connected to GND, no pinctrl for it.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>

Link: https://lore.kernel.org/r/20200305113912.32226-2-andy.yan@rock-chips.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>