arm64: dts: amlogic: meson-g12-common: change aobus-pinctrl node name

Bindings expects name to be "pinctrl", fix it.

Link: https://lore.kernel.org/r/20230706-topic-amlogic-upstream-dt-fixes-take3-v1-2-63ed070eeab2@linaro.org


Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>