cmake: module: llext: Add CONFIG_LLEXT check to all module build scripts #21392

Job	Run time
manifest-check	54s
LP64-WIP	3m 52s
build-linux (zmain, mtl lnl)	3m 15s
build-linux (mnfst, mtl lnl)	5m 56s
build-linux (mnfst, ptl)	4m 39s
build-linux (zmain, ptl)	3m 19s
build-linux (zmain, tgl tgl-h)	3m 19s
build-linux (mnfst, tgl tgl-h)	5m 43s
build-linux (-d, mnfst, lnl)	4m 34s
build-windows (ptl)	9m 22s
build-linux (mnfst, --all)	16m 13s
build-linux (zmain, imx8 imx8x imx8m imx8ulp)	3m 28s
build-windows (mtl lnl)	10m 1s
build-linux (mnfst, imx8 imx8x imx8m imx8ulp)	6m 43s
build-windows (-d, lnl)	9m 28s
build-windows (imx8 imx8x imx8m imx8ulp)	14m 3s
build-windows (tgl tgl-h)	10m 59s
compare-linux-win	42s
	1h 56m 30s

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