Fix sdio node order in the soc device tree

Fixes: a1737347250e ("arm64: dts: meson: g12a: add SDIO controller")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>