Integrate meta-seco-imx/u-boot-seco-imx/seco_lf_v2021.04_962ram_ym

Commit: https://git.seco.com/edgehog/layers/seco/meta-seco-imx/-/commit/45479bd20d6d6d133bc27c07fb76240663afcac6

Integrate u-boot-seco-imx/seco_lf_v2021.04_962ram_ym

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Commit: https://git.seco.com/edgehog/bsp/nxp/u-boot-seco-imx/-/commit/cce70593f3364ca613eb33116639b9e13b7848b8

[962] fix qd 4x512M ram configuration not booting

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Commit: https://git.seco.com/edgehog/bsp/nxp/u-boot-seco-imx/-/commit/312c82effb290f98b62a1af5a441a4f60f9a9be2

[962] fix solo 2x256M ram configuration (incorrectly detected as 1G)