userspace: dp: Add support for userspace DP thread #21238

Job	Run time
manifest-check	58s
LP64-WIP	3m 49s
build-windows (imx8 imx8x imx8m imx8ulp)	9m 59s
build-windows (mtl lnl)	8m 18s
build-windows (ptl)	6m 35s
build-windows (-d, lnl)	7m 5s
build-linux (mnfst, imx8 imx8x imx8m imx8ulp)	6m 22s
build-windows (tgl tgl-h)	8m 20s
build-linux (mnfst, ptl)	4m 31s
build-linux (zmain, imx8 imx8x imx8m imx8ulp)	6m 30s
build-linux (mnfst, --all)	15m 51s
build-linux (zmain, tgl tgl-h)	5m 16s
build-linux (zmain, ptl)	4m 17s
build-linux (-d, mnfst, lnl)	4m 26s
build-linux (mnfst, tgl tgl-h)	5m 42s
build-linux (zmain, mtl lnl)	5m 55s
build-linux (mnfst, mtl lnl)	5m 41s
compare-linux-win	1m 19s
	1h 50m 54s

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