Integrate meta-seco-imx/u-boot-seco-imx/seco_lf_v2021.04_c72_800x480

Commit: edgehog/layers/seco/meta-seco-imx@4640a854

Integrate u-boot-seco-imx/seco_lf_v2021.04_c72_800x480

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Commit: edgehog/bsp/nxp/u-boot-seco-imx@33868cda

[C72 Mini/Nano] Add video overlay for 7" LVDS PANEL

This configuration supports the Innolux NE070NB-04F LVDS panel (single channel)