Integrate u-boot-seco-imx/seco_lf_v2021.04_962ram_ym
Commit: edgehog/bsp/nxp/u-boot-seco-imx@a6adb321
[962] fix qd 4x512M ram configuration not booting
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Commit: edgehog/bsp/nxp/u-boot-seco-imx@f97a2135
[962] fix solo 2x256M ram configuration (incorrectly detected as 1G)