llext: add support for PTL DRAM detached sections with MMU enabled #20178

Job	Run time
LP64-WIP	4m 3s
build-windows (mtl lnl)	8m 1s
manifest-check	51s
build-windows (imx8 imx8x imx8m imx8ulp)	8m 6s
build-windows (tgl tgl-h)	7m 46s
build-windows (-d, lnl)	6m 23s
build-linux (mnfst, mtl lnl)	5m 40s
build-linux (mnfst, tgl tgl-h)	6m 6s
build-linux (-d, mnfst, lnl)	4m 47s
build-linux (zmain, tgl tgl-h)	5m 9s
build-linux (zmain, mtl lnl)	5m 42s
build-linux (mnfst, --all)	13m 53s
build-linux (zmain, ptl)	4m 36s
build-linux (zmain, imx8 imx8x imx8m imx8ulp)	6m 28s
build-linux (mnfst, ptl)	4m 39s
build-linux (mnfst, imx8 imx8x imx8m imx8ulp)	7m 7s
build-windows (ptl)	6m 28s
compare-linux-win	1m 5s
	1h 46m 50s

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