[PATCH] imx8mn-ddr4-evk: generate single bootable image

[sbabic at denx.de]

> As suggested in commit 028abfd9b157 ("imx8mm-evk: Generate a single
> bootable flash.bin again") for imx8mm_evk, it is possible to produce
> single bootable image via binman. This restores the original behavior in
> distros, where only one boot container is used to create target image.
> Perform similar adaptions in order to provide single bootable image for
> imx8mn-ddr4-evk derivate.
> Update documentation to drop additional step of copying u-boot.itb
> Fixes: 353dfe4b4359 ("imx8mn-ddr4-evk: switch to use binman")
> Signed-off-by: Andrey Zhizhikin <andrey.zhizhikin at leica-geosystems.com>
> Reviewed-by: Fabio Estevam <festevam at gmail.com>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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