dt-bindings: iio: adc: amlogic,meson-saradc: also allow meson8-saradc to have amlogic...

dt-bindings: iio: adc: amlogic,meson-saradc: also allow meson8-saradc to have amlogic,hhi-sysctrl property

The SARADC on the Amlogic Meson8 SoC also requires the amlogic,hhi-sysctrl,
property, document it by adding the amlogic,meson8-saradc compatible in the
adequate allOf:if:compatible:contains:enums along meson8b and meson8m2.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20240911-topic-amlogic-arm32-upstream-bindings-fixes-amlogic-hhi-sysctrl-v1-1-b8c3180b2fba@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>