Integrate u-boot-seco-imx/seco/lf_v2021.04/develop-c12
Commit: arm/nxp/imx/develop/yocto/5.x/u-boot-seco-imx@24f28843
c12: update seco boot logo to a better quality image
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Commit: arm/nxp/imx/develop/yocto/5.x/u-boot-seco-imx@f9a24d1b
c12: add boot from uSD option in seco_config and change denx uboot logo to SECO logo