[PATCH] toradex: colibri_imx7: Enable nand/emmc detection and set boot variant

[sbabic@denx.de]

> From: Hiago De Franco <hiago.franco@toradex.com>
> Add detection of eMMC vs NAND devices on the Colibri iMX7
> board. A GPIO is configured to detect the presence of an on-board resistor
> that is configured differently based on the flash memory used. Depending on
> the detection result, the 'variant' environment variable is set to '-emmc'
> or cleared, indicating the type of storage device.
> This enhancement improves variant detection during system initialization
> through USB recovery mode, where U-Boot is loaded directly to RAM. This
> allows variant detection for an accurate device tree selection.
> Signed-off-by: Hiago De Franco <hiago.franco@toradex.com>
> Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
> Reviewed-by: Fabio Estevam <festevam@gmail.com>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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