With silicon revision 2.0, add support for SD card on the am65x-evm.
Boards with silicon revision 1.0 are susceptible to interface issues
because of erratas i2025 and i2026[1] and are recommended to disable
this node.

[1] Am654x Silicon Revision 1.0 errata: https://www.ti.com/lit/pdf/sprz452Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>