Integrate uboot-imx-kuk/env-unification

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Commit: seco-ne/3rd-party/kuk/uboot-imx-kuk@39d648c5



seco_mx6: move existing env variables to a separate header.

Signed-off-by: Mikhail Vanyulin <mikhail.vanyulin@rtsoft.de>

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Commit: seco-ne/3rd-party/kuk/uboot-imx-kuk@da803987



trizeps8: move disable console, edgehog and bootselect env to a separate header

This adds include/seco/seco_common_env.h header which contains environment
variables specific to SECO boards.

Signed-off-by: Mikhail Vanyulin <mikhail.vanyulin@rtsoft.de>

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Commit: seco-ne/3rd-party/kuk/uboot-imx-kuk@3d14f0d5



trizeps8:trizeps8nano: move old common env settings to separate headers

Signed-off-by: Mikhail Vanyulin <mikhail.vanyulin@rtsoft.de>

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Commit: seco-ne/3rd-party/kuk/uboot-imx-kuk@8922ecd3



trizeps8:env: move extra env settings for nand boot to a separate header

Signed-off-by: Mikhail Vanyulin <mikhail.vanyulin@rtsoft.de>

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Commit: seco-ne/3rd-party/kuk/uboot-imx-kuk@5c454c2e



trizeps8:env: move mfg variables to a separate header

Signed-off-by: Mikhail Vanyulin <mikhail.vanyulin@rtsoft.de>

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Commit: seco-ne/3rd-party/kuk/uboot-imx-kuk@2d4cd810



trizeps8:env: move jailhouse variables to a separate header

Signed-off-by: Mikhail Vanyulin <mikhail.vanyulin@rtsoft.de>

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Commit: seco-ne/3rd-party/kuk/uboot-imx-kuk@5b4092fb



trizeps8:env: move fuse variables to a separate header

Originally the same vars were defined in trizeps8mini.h and trizeps8nano.h.

Signed-off-by: Mikhail Vanyulin <mikhail.vanyulin@rtsoft.de>