arm64: dts: rockchip: fix i2c2 pinctrl-names property on anbernic-rg353p/v

arm64: dts: rockchip: fix i2c2 pinctrl-names property on anbernic-rg353p/v

We want to control pins, not beer mugs, so rename pintctrl-names to the
expected pinctrl-names.

This was not affecting functionality, because the i2c2 controller
already had a set of pinctrl properties.

Fixes: 523adb553573 ("arm64: dts: rockchip: add Anbernic RG353P and RG503")
Fixes: 1e141cf12726 ("arm64: dts: rockchip: add Anbernic RG353V and RG353VS")
Cc: Chris Morgan <macromorgan@hotmail.com>
Acked-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20241008203940.2573684-2-heiko@sntech.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>