boards: ace30: disable IMR context restore #267

Job	Run time
LP64-WIP	3m 38s
build-windows (imx8 imx8x imx8m imx8ulp)	8m 38s
build-linux (mnfst, imx8 imx8x imx8m imx8ulp)	5m 36s
build-windows (mtl)	7m 13s
manifest-check	58s
build-linux (mnfst, mtl)	4m 14s
build-windows (tgl tgl-h)	7m 59s
build-linux (mnfst, lnl)	4m 22s
build-windows (-d, mtl)	7m 4s
build-linux (mnfst, tgl tgl-h)	5m 25s
build-linux (zmain, imx8 imx8x imx8m imx8ulp)	5m 37s
build-linux (zmain, mtl)	4m 23s
build-linux (zmain, lnl)	4m 5s
build-linux (zmain, tgl tgl-h)	5m 25s
build-linux (-d, mnfst, mtl)	4m 11s
build-linux (mnfst, --all)	9m 46s
compare-linux-win	29s
	1h 29m 3s

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