ipc3: minor fixes for ipc validation #23487

Job	Run time
LP64-WIP	3m 51s
manifest-check	2m 44s
build-linux (-d, mnfst, lnl)	4m 37s
build-linux (mnfst, tgl)	4m 35s
build-linux (mnfst, wcl imx95)	7m 44s
build-linux (mnfst, tgl-h)	4m 37s
build-windows (mnfst, imx8m imx8ulp)	10m 20s
build-windows (-d, mnfst, lnl)	8m 47s
build-linux (mnfst, imx8 imx8x)	5m 16s
build-linux (mnfst, imx8m imx8ulp)	5m 5s
build-linux (mnfst, ptl)	5m 31s
build-windows (mnfst, tgl)	9m 35s
build-windows (mnfst, mtl)	8m 18s
build-windows (mnfst, imx8 imx8x)	10m 3s
build-windows (mnfst, tgl-h)	8m 45s
build-linux (mnfst, mtl)	4m 43s
build-linux (mnfst, lnl)	4m 47s
build-windows (mnfst, lnl)	9m 26s
build-windows (mnfst, ptl)	10m 8s
compare-linux-win	29s
	2h 9m 21s

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