arm: dts: k3-am654: add needed regs to udmap nodes

Ethernet is one of a few IPs in U-Boot that depend on DMA to operate.
However there are a few missing registers ranges in the udmap nodes
need to properly setup DMA for the am65x.

A fix has been added to the Linux kernel[0] to add these ranges however
they have not made it to a Linux tag. To keep DMA operational until the
next DT sync from Linux, add these ranges to the *-u-boot.dtsi with a
note for our future selves.

[0] https://lore.kernel.org/r/20231213135138.929517-2-vigneshr@ti.com



Tested-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Bryan Brattlof <bb@ti.com>
Reviewed-by: Nishanth Menon <nm@ti.com>