drivers: stepper: Kconfig: fix bleeding Kconfigs #211819

Job	Run time
twister-build-prep	5m 37s
twister-build (1)	26m 5s
twister-build (4)	26m 15s
twister-build (6)	15m 18s
twister-build (2)	18m 39s
twister-build (7)	16m 46s
twister-build (3)	16m 56s
twister-build (5)	14m 22s
Publish Unit Tests Results	1m 26s
Check Twister Status / all jobs passed	4s
	2h 21m 28s

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