arm: dts: k3-am625-*: Mark memory with u-boot,dm-spl

Mark the memory node with u-boot,dm-spl so we can use it
from early SPL on both R5 and A53.

Signed-off-by: Georgi Vlaev <g-vlaev@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2 files changed