Integrate meta-seconorth-machine/emc-testing

Commit: seco-ne/yocto-imx93/layers/meta-seconorth-machine@f5763675

conf: Remove unneeded device trees

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Commit: seco-ne/yocto-imx93/layers/meta-seconorth-machine@df05ecf2

connectivity:wpa-supplicant: Symlink firmware

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Commit: seco-ne/yocto-imx93/layers/meta-seconorth-machine@05ce8fb0

kernel:linux: Update defconfig name

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Commit: seco-ne/yocto-imx93/layers/meta-seconorth-machine@925b0c71

test: Add emc-test-suite

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Commit: seco-ne/yocto-imx93/layers/meta-seconorth-machine@2565c7fd

graphics: Add fbv dependency for emc test

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Commit: seco-ne/yocto-imx93/layers/meta-seconorth-machine@fcd7a491

extended: Add ltp dependency for emc test