arm64: dts: meson: g12a: add mmc nodes
Add port B (sdcard) and port C (eMMC) pinctrl and controllers nodes to the g12a DT. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>