Integrate uboot-imx-kuk/add-nallino-support

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Commit: seco-ne/3rd-party/kuk/uboot-imx-kuk@7db73164



board:nallino: add initial nallino board

It is based on Rocko U-Boot for Nallino.

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

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Commit: seco-ne/3rd-party/kuk/uboot-imx-kuk@66a7daa6



seco_mx6_base_env.h: make loadaddresses configurable

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