This adds the SAR ADC to meson.dtsi and configures the clocks on Meson8
and Meson8b to allow boards to use it. Some boards use it to connect a
button to it.
Signed-off-by: NMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NKevin Hilman <khilman@baylibre.com>