app/stub*.conf: add CONFIG_SAMPLE_SMART_AMP=y #804

Job	Run time
build-windows (imx8 imx8x imx8m)	12m 5s
build-linux (mnfst, imx8 imx8x imx8m)	6m 57s
build-windows (mtl)	10m 9s
build-linux (mnfst, mtl)	7m 8s
build-windows (tgl tgl-h)	12m 55s
build-linux (mnfst, lnl)	5m 45s
build-windows (-d, mtl)	12m 25s
build-linux (mnfst, tgl tgl-h)	6m 55s
build-linux (zmain, imx8 imx8x imx8m)	6m 9s
build-linux (zmain, mtl)	5m 30s
LP64-WIP	4m 43s
build-linux (zmain, lnl)	5m 25s
build-linux (zmain, tgl tgl-h)	6m 55s
manifest-check	57s
build-linux (-d, mnfst, mtl)	6m 4s
compare-linux-win	42s
	1h 50m 44s

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