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

Commit: edgehog/layers/seco/meta-seco-imx@f3e964e4

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

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Commit: edgehog/bsp/nxp/u-boot-seco-imx@0ecd6125

[C26] env_conf: fix typo on BOARD_ROOT_ID_SD

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Commit: edgehog/bsp/nxp/u-boot-seco-imx@d1ccfc64

[C26] env_conf: fix HDP firmware loading

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Commit: edgehog/bsp/nxp/u-boot-seco-imx@18545c06

[C26] env_conf: align indentation

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Commit: edgehog/bsp/nxp/u-boot-seco-imx@68b22d0d

[C43] env_conf: fix HDP firmware loading

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Commit: edgehog/bsp/nxp/u-boot-seco-imx@eb23f732

[C43] env_conf: align indentation

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Commit: edgehog/bsp/nxp/u-boot-seco-imx@c935c3be

[i.MX8][SECO_CONFIG] improve HDP firmware loading

HDP TX and RX firmwares are all loaded under video set-up functions. Split them leaving TX under video and moving RX under peripherals, as it is where they should actually be set-up.