arm64: dts: rockchip: correct gpio_pwrctrl1 typo on nanopc-t6

Both rk806_dvs1_null and rk806_dvs2_null duplicate gpio_pwrctrl2 and
gpio_pwrctrl1 is not set. This patch sets gpio_pwrctrl1.

Signed-off-by: John Clark <inindev@gmail.com>
Link: https://lore.kernel.org/r/20231225223226.17690-1-inindev@gmail.com


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