[PATCH v2] configs: colibri-imx7*: set 'fdtfile' generically in PREBOOT

[Francesco Dolcini]

On Tue, Nov 18, 2025 at 03:48:00PM +0100, Ernest Van Hoecke wrote:
> From: Ernest Van Hoecke <ernest.vanhoecke at toradex.com>
> 
> In TEZI (Toradex Easy Installer), we use one U-Boot binary for both our
> NAND and eMMC Colibri iMX7 modules. Currently, CONFIG_PREBOOT sets the
> environment variable 'fdtfile' depending on which defconfig was used,
> adding the '-emmc' variant for the emmc defconfig. Since we always build
> the TEZI recovery U-Boot with the standard (non-emmc) defconfig, fdtfile
> has to be overwritten later or it will be wrong there.
> 
> By using '$variant', the fdtfile var is properly constructed at run time
> for both the NAND and eMMC variants, and we do not have to worry about
> setting fdtfile again when building the recovery TEZI U-Boot.
> 
> This also synchronizes these configs with how we handle the iMX6ULL.
> 
> Fixes: 327381e8b57c ("colibri_imx7: use preboot for fdtfile evaluation")
> Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke at toradex.com>

Reviewed-by: Francesco Dolcini <francesco.dolcini at toradex.com>