Integrate meta-seco-imx/u-boot-seco-imx/seco_lf_v2021.04_develop_c72_hotfix

Commit: https://git.seco.com/edgehog/layers/seco/meta-seco-imx/-/commit/ea71668d221b7d81cd7e18cc259e04cd70f9412c

Integrate u-boot-seco-imx/seco_lf_v2021.04_develop_c72_hotfix

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Commit: https://git.seco.com/edgehog/bsp/nxp/u-boot-seco-imx/-/commit/a9b9fc1373ebbeac1ed521d9bd139347b13cba67

[C72n][DEFCONFIG] fix compilation issue

commit 0e6729a66e7e727f2513ee84f1258ae6f2d81fc5 breaks u-boot compilation because SPL do not use driver model; revert defconfig patch to fix it. Boot from eMMC is still supported