ptl: Make MicSel a built-in module, not an llext module #20351

Job	Run time
manifest-check	44s
build-linux (mnfst, imx8 imx8x imx8m imx8ulp)	6m 26s
build-linux (mnfst, mtl lnl)	5m 43s
LP64-WIP	4m 2s
build-linux (zmain, ptl)	4m 44s
build-linux (mnfst, ptl)	4m 35s
build-windows (-d, lnl)	6m 42s
build-linux (mnfst, tgl tgl-h)	5m 24s
build-linux (zmain, mtl lnl)	5m 38s
build-linux (mnfst, --all)	14m 15s
build-linux (zmain, tgl tgl-h)	5m 34s
build-linux (-d, mnfst, lnl)	4m 27s
build-windows (imx8 imx8x imx8m imx8ulp)	9m 1s
build-windows (mtl lnl)	7m 5s
build-windows (ptl)	6m 24s
build-linux (zmain, imx8 imx8x imx8m imx8ulp)	6m 31s
build-windows (tgl tgl-h)	6m 24s
compare-linux-win	30s
	1h 44m 9s

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