lib: fast-get: fix userspace build #856

Job	Run time
manifest-check	3m 29s
build-windows (imx8 imx8x imx8m imx8ulp)	8m 12s
build-windows (ptl)	11m 2s
build-windows (tgl tgl-h)	11m 26s
build-windows (mtl lnl)	12m 8s
build-windows (-d, lnl)	11m 0s
build-linux (mnfst, mtl lnl)	5m 30s
build-linux (zmain, mtl lnl)	6m 24s
build-linux (mnfst, tgl tgl-h)	6m 3s
LP64-WIP	4m 39s
build-linux (zmain, imx8 imx8x imx8m imx8ulp)	3m 37s
build-linux (mnfst, ptl)	6m 13s
build-linux (mnfst, imx8 imx8x imx8m imx8ulp)	4m 20s
build-linux (-d, mnfst, lnl)	5m 11s
build-linux (mnfst, --all)	12m 48s
build-linux (zmain, ptl)	5m 5s
build-linux (zmain, tgl tgl-h)	6m 12s
compare-linux-win	27s
	2h 3m 46s

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