Integrate meta-seco-imx/u-boot-seco-imx/c72n-fix-default-env

Commit: https://git.seco.com/edgehog/layers/seco/meta-seco-imx/-/commit/1536e344ca04227d82a2748df6123c8bf908e0ed

Integrate u-boot-seco-imx/c72n-fix-default-env

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Commit: https://git.seco.com/edgehog/bsp/nxp/u-boot-seco-imx/-/commit/6321ad0c13b11b1dae66ca7cce8cea1a274dbd90

[C72n][ENV] fix default root device id

By default, env variable root_device_id is 1 (uSD) while fdt_device_id, kernel_device_id, ramfs_device_id, etc are 0 (MMC). Set all to 0 for c72n