aic7xxx: Fix typo in aic7xxx

Correct spelling "staus" to "status" in aic79xx_core.c and
Correct spelling "staus" to "status" in aic7xxx_core.c and
Correct spelling "supportd" to "supported" in aic79xx_core.c

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>