zephyr: userspace: Fix compilation options #775

Job	Run time
manifest-check	48s
LP64-WIP	3m 37s
build-windows (tgl tgl-h)	6m 16s
build-windows (mtl lnl)	6m 21s
build-windows (ptl)	5m 29s
build-windows (imx8 imx8x imx8m imx8ulp)	6m 21s
build-windows (-d, lnl)	6m 14s
build-linux (mnfst, ptl)	4m 10s
build-linux (mnfst, tgl tgl-h)	5m 28s
build-linux (zmain, tgl tgl-h)	5m 31s
build-linux (mnfst, imx8 imx8x imx8m imx8ulp)	6m 24s
build-linux (mnfst, mtl lnl)	6m 13s
build-linux (zmain, imx8 imx8x imx8m imx8ulp)	6m 25s
build-linux (zmain, ptl)	4m 12s
build-linux (zmain, mtl lnl)	6m 25s
build-linux (mnfst, --all)	6m 20s
build-linux (-d, mnfst, lnl)	4m 18s
compare-linux-win	24s
	1h 30m 56s

Provide feedback