vregion: replace error messages with warnings #22857

Job	Run time
LP64-WIP	3m 48s
manifest-check	2m 37s
build-windows (imx8m imx8ulp)	10m 26s
build-windows (imx8 imx8x)	10m 38s
build-windows (mtl)	9m 43s
build-windows (tgl)	9m 34s
build-windows (-d, lnl)	9m 0s
build-windows (ptl)	11m 8s
build-linux (mnfst, tgl)	3m 52s
build-windows (tgl-h)	9m 44s
build-windows (lnl)	12m 29s
build-linux (mnfst, imx8m imx8ulp)	4m 12s
build-linux (mnfst, ptl)	6m 5s
build-linux (-d, mnfst, lnl)	4m 30s
build-linux (mnfst, tgl-h)	4m 10s
build-linux (mnfst, lnl)	4m 19s
build-linux (mnfst, imx8 imx8x)	4m 43s
build-linux (mnfst, wcl imx95)	6m 59s
build-linux (mnfst, mtl)	4m 27s
compare-linux-win	36s
	2h 13m 0s

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