.github: re-enable rimage workflows #773

Job	Run time
LP64-WIP	5m 41s
build-linux (mnfst, imx8 imx8x imx8m)	5m 53s
build-linux (mnfst, mtl)	5m 39s
manifest-check	44s
build-linux (mnfst, lnl)	5m 40s
build-windows (imx8 imx8x imx8m)	6m 27s
build-windows (mtl)	6m 27s
build-linux (mnfst, tgl tgl-h)	6m 35s
build-windows (tgl tgl-h)	6m 27s
build-windows (-d, mtl)	6m 19s
build-linux (zmain, imx8 imx8x imx8m)	5m 45s
build-linux (zmain, mtl)	5m 47s
build-linux (zmain, lnl)	6m 35s
build-linux (zmain, tgl tgl-h)	6m 4s
build-linux (-d, mnfst, mtl)	5m 46s
compare-linux-win	31s
	1h 26m 20s

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