Add a new defconfig for the imx8mn-ddr4-evk board that uses upstream
components, such as:
- Linux Kernel: Upstream version 6.12.16
- U-boot: Upstream version 2025.01
- ATF: Upstream version 2.12
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Tested-by: Julien Olivain <ju.o@free.fr>
[Julien: Tested on board 700-31407 REV A5]
Signed-off-by: Julien Olivain <ju.o@free.fr>
