Audio: KPB, Mixin-Mixout: Fix missing HiFi3 header include #21106

Job	Run time
manifest-check	1m 2s
build-windows (imx8 imx8x imx8m imx8ulp)	9m 58s
build-windows (tgl tgl-h)	7m 46s
LP64-WIP	3m 58s
build-windows (ptl)	6m 14s
build-windows (mtl lnl)	7m 57s
build-linux (mnfst, mtl lnl)	5m 42s
build-windows (-d, lnl)	7m 4s
build-linux (mnfst, ptl)	4m 35s
build-linux (mnfst, imx8 imx8x imx8m imx8ulp)	6m 29s
build-linux (zmain, tgl tgl-h)	5m 37s
build-linux (zmain, mtl lnl)	6m 4s
build-linux (zmain, imx8 imx8x imx8m imx8ulp)	6m 44s
build-linux (zmain, ptl)	4m 31s
build-linux (mnfst, tgl tgl-h)	5m 20s
build-linux (mnfst, --all)	15m 41s
build-linux (-d, mnfst, lnl)	4m 25s
compare-linux-win	1m 9s
	1h 50m 16s

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