Integrate config/add_mtk_support

Commit: config@3d5bfa5b

setup:machine: Renamed seco-genio-700 to seco-genio700

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Commit: config@4a17e65b

bblayers: Add bblayers for MediaTek

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Commit: config@6c72ca53

config:setup: Adjust script for MediaTek

Source merge request: config!203 (merged)

mentioned in merge request config!203 (merged)

added 6 commits

• bf5d42bf...63aea01d - 5 commits from branch kirkstone
• 0afeff2e - Integrate config/add_mtk_support

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merged