tree-wide: remove legacy platform_shared_get() #23795

Job	Run time
manifest-check	2m 4s
build-windows (mnfst, imx8 imx8x)	2m 10s
build-windows (mnfst, imx8m imx8ulp)	2m 9s
build-linux (mnfst, lnl)	2m 5s
build-linux (mnfst, tgl)	2m 5s
build-windows (mnfst, mtl)	2m 10s
build-linux (mnfst, mtl)	2m 6s
build-windows (mnfst, tgl)	2m 12s
LP64-WIP	2m 5s
build-linux (mnfst, imx8 imx8x)	2m 5s
build-windows (mnfst, ptl)	1m 46s
build-windows (mnfst, lnl)	1m 38s
build-linux (mnfst, imx8m imx8ulp)	2m 6s
build-linux (mnfst, tgl-h)	2m 6s
build-linux (mnfst, ptl)	2m 5s
build-linux (mnfst, wcl imx95)	2m 8s
build-linux (-d, mnfst, lnl)	2m 7s
build-windows (mnfst, tgl-h)	2m 5s
build-windows (-d, mnfst, lnl)	2m 11s
compare-linux-win	19s
	39m 42s

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