ARM: dts: amlogic: meson8: fix ao_arc_sram node name

ARM: dts: amlogic: meson8: fix ao_arc_sram node name

Use the proper node name for the sram, fixing:
sram@d9000000: 'ao-arc-sram@0' does not match any of the regexes: '^([a-z0-9]*-)?sram(-section)?@[a-f0-9]+$', 'pinctrl-[0-9]+'
	from schema $id: http://devicetree.org/schemas/sram/sram.yaml#

Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20240916-topic-amlogic-arm32-upstream-bindings-fixes-v2-3-0b20ed4f0571@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>