arm64: dts: lx2162a-qds: support SD UHS-I and eMMC HS400 modes

The default NXP SDHC adapter cards for LX2162AQDS are SD 2.0/3.0
adapter card for eSDHC1, and eMMC 5.1 adapter card for eSDHC2.
Add speed modes properties supported by the two adapters in device
tree node.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>