dt-bindings: mmc: sunxi: Add Allwinner A100 and H616 compatibles

Add binding for A100's and H616's mmc and emmc controller.

Signed-off-by: Yangtao Li <frank@allwinnertech.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20201211011934.6171-9-andre.przywara@arm.com


Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>