DP: fix DP thread priority #73

Job	Run time
LP64-WIP	4m 50s
manifest-check	56s
build-linux (mnfst, imx8 imx8x imx8m)	5m 45s
build-windows (imx8 imx8x imx8m)	11m 47s
build-linux (mnfst, mtl)	5m 41s
build-windows (mtl)	11m 9s
build-linux (mnfst, lnl)	5m 28s
build-windows (tgl tgl-h)	12m 31s
build-linux (mnfst, tgl tgl-h)	6m 55s
build-windows (-d, mtl)	10m 55s
build-linux (zmain, imx8 imx8x imx8m)	5m 46s
build-linux (zmain, mtl)	5m 28s
build-linux (zmain, lnl)	6m 24s
build-linux (zmain, tgl tgl-h)	6m 45s
build-linux (-d, mnfst, mtl)	6m 9s
compare-linux-win	59s
	1h 47m 28s

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