ARM: dts: amlogic: meson8: use correct pinctrl bank node name

ARM: dts: amlogic: meson8: use correct pinctrl bank node name

Use the proper name for the pinctrl bank subnode, fixing:
pinctrl@9880: Unevaluated properties are not allowed ('banks@80b0', 'banks@80b0', 'banks@80b0', 'banks@80b0', 'banks@80b0', 'banks@80b0', 'banks@80b0', 'banks@80b0', 'banks@80b0', 'banks@80b0', 'banks@80b0', 'banks@80b0', 'banks@80b0', 'banks@80b0', 'banks@80b0', 'reg', 'reg' were unexpected)
	from schema $id: http://devicetree.org/schemas/pinctrl/amlogic,meson8-pinctrl-cbus.yaml#
pinctrl@84: Unevaluated properties are not allowed ('ao-bank@14', 'ao-bank@14', 'ao-bank@14', 'ao-bank@14', 'ao-bank@14', 'ao-bank@14', 'ao-bank@14', 'ao-bank@14', 'ao-bank@14', 'ao-bank@14', 'ao-bank@14', 'ao-bank@14', 'ao-bank@14', 'ao-bank@14', 'ao-bank@14', 'reg', 'reg' were unexpected)

Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20240916-topic-amlogic-arm32-upstream-bindings-fixes-v2-7-0b20ed4f0571@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>