[PATCH v2 4/5] colibri-imx6ull: add update_uboot wrapper

[sbabic at denx.de]

> From: Igor Opaniuk <igor.opaniuk at toradex.com>
> Add universal update_uboot wrapper that helps to update
> U-Boot image on internal storage.
> Usage example:
> > tftpboot ${loadaddr} ${board_name}/u-boot-nand.imx
> > run update_uboot
> Signed-off-by: Igor Opaniuk <igor.opaniuk at toradex.com>
Applied to u-boot-imx, -next, thanks !

Best regards,
Stefano Babic

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