Integrate u-boot-seco-imx/seco/lf_v2021.04/develop-c12

Commit: https://git.seco.com/arm/nxp/imx/develop/yocto/5.x/u-boot-seco-imx/-/commit/24f288434e91a3af21c2348664941523c3952241

c12: update seco boot logo to a better quality image

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Commit: https://git.seco.com/arm/nxp/imx/develop/yocto/5.x/u-boot-seco-imx/-/commit/f9a24d1b3f66b207a4eafb1b074fcd720d7aab22

c12: add boot from uSD option in seco_config and change denx uboot logo to SECO logo