Switch to private Zephyr #264

Job	Run time
LP64-WIP	3m 31s
manifest-check	2m 56s
build-windows (lnl)	7m 14s
build-windows (tgl)	9m 37s
build-windows (ptl)	7m 34s
build-windows (imx8m imx8ulp)	11m 39s
build-windows (mtl)	7m 55s
build-windows (imx8 imx8x)	12m 5s
build-windows (tgl-h)	12m 48s
build-linux (mnfst, imx8m imx8ulp)	4m 54s
build-linux (mnfst, tgl)	4m 25s
build-linux (mnfst, lnl)	3m 19s
build-windows (-d, lnl)	8m 39s
build-linux (zmain, lnl)	3m 22s
build-linux (zmain, tgl)	3m 30s
build-linux (zmain, mtl)	3m 24s
build-linux (zmain, tgl-h)	3m 29s
build-linux (zmain, imx8 imx8x)	3m 53s
build-linux (mnfst, tgl-h)	4m 34s
build-linux (mnfst, wcl imx95)	3m 15s
build-linux (zmain, imx8m imx8ulp)	3m 26s
build-linux (zmain, ptl)	3m 23s
build-linux (mnfst, ptl)	3m 27s
build-linux (mnfst, mtl)	3m 21s
build-linux (mnfst, imx8 imx8x)	4m 59s
build-linux (-d, mnfst, lnl)	3m 25s
compare-linux-win	22s
	2h 24m 26s

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