rimage: config: add ptl to generic platform toml #19806

Job	Run time
LP64-WIP	4m 9s
manifest-check	58s
build-linux (mnfst, imx8 imx8x imx8m imx8ulp)	6m 13s
build-linux (mnfst, mtl lnl)	5m 50s
build-linux (mnfst, ptl)	5m 20s
build-windows (imx8 imx8x imx8m imx8ulp)	8m 9s
build-linux (mnfst, tgl tgl-h)	5m 54s
build-windows (mtl lnl)	7m 44s
build-linux (zmain, imx8 imx8x imx8m imx8ulp)	6m 33s
build-windows (ptl)	6m 6s
build-linux (zmain, mtl lnl)	5m 43s
build-windows (tgl tgl-h)	6m 27s
build-linux (zmain, ptl)	4m 49s
build-windows (-d, lnl)	5m 53s
build-linux (zmain, tgl tgl-h)	5m 42s
build-linux (-d, mnfst, lnl)	4m 48s
build-linux (mnfst, --all)	14m 18s
compare-linux-win	37s
	1h 45m 13s

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