Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/include/sound/ac97_codec.h b/include/sound/ac97_codec.h
index f1dcefe4..02cbb50 100644
--- a/include/sound/ac97_codec.h
+++ b/include/sound/ac97_codec.h
@@ -385,7 +385,7 @@
 #define AC97_SCAP_DETECT_BY_VENDOR (1<<8) /* use vendor registers for read tests */
 #define AC97_SCAP_NO_SPDIF	(1<<9)	/* don't build SPDIF controls */
 #define AC97_SCAP_EAPD_LED	(1<<10)	/* EAPD as mute LED */
-#define AC97_SCAP_POWER_SAVE	(1<<11)	/* capable for aggresive power-saving */
+#define AC97_SCAP_POWER_SAVE	(1<<11)	/* capable for aggressive power-saving */
 
 /* ac97->flags */
 #define AC97_HAS_PC_BEEP	(1<<0)	/* force PC Speaker usage */