Integrate u-boot-seco-imx/seco_lf_v2021.04_develop_ym_a75
Commit: edgehog/bsp/nxp/u-boot-seco-imx@53f5d67c
[A75] fix platform name detection at SPL
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Commit: edgehog/bsp/nxp/u-boot-seco-imx@2413751e
[A75] fix eMMC reset and pad control at SPL
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Commit: edgehog/bsp/nxp/u-boot-seco-imx@d1ebc5a0
[A75] fix boot device detection
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Commit: edgehog/bsp/nxp/u-boot-seco-imx@13e3138d
[962] fix eMMC reset and pad control at SPL
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Commit: edgehog/bsp/nxp/u-boot-seco-imx@6cb38529
[A75] remove HDMI-LVDS and LVDS-HDMI framebuffer confict
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Commit: edgehog/bsp/nxp/u-boot-seco-imx@7cd70531
[A75] fix HDMI kernel command line spec_list
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Commit: edgehog/bsp/nxp/u-boot-seco-imx@1bdbb41a
[A75] add overlays constants names to seco environment
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Commit: edgehog/bsp/nxp/u-boot-seco-imx@377597f7
[A75] update seco_config constants names
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Commit: edgehog/bsp/nxp/u-boot-seco-imx@5084f0ab
[A75] update ram calibration values for 2x512M configuration