arm64: dts: rockchip: Use correct pin for lcd-reset pinctrl on rk3399-roc-pc

Fix typo according to schematics.
The original pin is needed to enable vcc3v0_sd in second patch of this series.

Signed-off-by: Markus Reichl <m.reichl@fivetechno.de>
Link: https://lore.kernel.org/r/cd5fd3a8-b0eb-9dc1-c473-9355762cdaa5@fivetechno.de


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