userspace: dp: Add support for userspace DP thread #21232

Job	Run time
build-linux (mnfst, ptl)	4m 30s
build-linux (-d, mnfst, lnl)	4m 30s
build-linux (mnfst, tgl tgl-h)	5m 28s
build-linux (mnfst, --all)	16m 27s
build-linux (zmain, mtl lnl)	6m 15s
build-linux (mnfst, mtl lnl)	5m 42s
build-windows (mtl lnl)	8m 55s
manifest-check	50s
build-linux (zmain, ptl)	5m 14s
build-windows (tgl tgl-h)	7m 14s
LP64-WIP	4m 57s
build-windows (-d, lnl)	6m 42s
build-linux (mnfst, imx8 imx8x imx8m imx8ulp)	6m 44s
build-linux (zmain, imx8 imx8x imx8m imx8ulp)	6m 46s
build-windows (ptl)	7m 9s
build-windows (imx8 imx8x imx8m imx8ulp)	9m 38s
build-linux (zmain, tgl tgl-h)	5m 32s
compare-linux-win	1m 10s
	1h 53m 43s

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