Integrate meta-seco-imx/u-boot-seco-imx/seco_lf_v2021.04-gm_962

Commit: edgehog/layers/seco/meta-seco-imx@4d727bf3

Integrate u-boot-seco-imx/seco_lf_v2021.04-gm_962

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Commit: edgehog/bsp/nxp/u-boot-seco-imx@21f33695

[962] fix hdmi+lvds, lvds+hdmi video definitions

• correct swapped overlay files
• fix selected mxcfb on hdmi+lvds, lvds+hdmi video_args

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Commit: edgehog/bsp/nxp/u-boot-seco-imx@28d4d087

[962] add bpp specification to HDMI