Integrate u-boot-seco-imx/seco/develop_ym
Merge branch 'seco_lf_v2021.04' of https://git.seco.com/edgehog/bsp/nxp/u-boot-seco-imx into seco/develop_ym
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[SECO-CONFIG] fix compilation without FTD overlays
Merge branch 'seco_lf_v2021.04' of https://git.seco.com/edgehog/bsp/nxp/u-boot-seco-imx into seco/develop_ym
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[SECO-CONFIG] fix compilation without FTD overlays