dts: mvebu: a80x0: Enable SD/eMMC interfaces

Enable SDHCI interface on AP and CP0 in A80x0 DTS files

Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Evan Wang <xswang@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>