tree-wide: fix assorted typos all over the place

That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/include/sound/wm8993.h b/include/sound/wm8993.h
index 9c661f2..eee19f6 100644
--- a/include/sound/wm8993.h
+++ b/include/sound/wm8993.h
@@ -36,7 +36,7 @@
 	unsigned int micbias1_lvl:1;
 	unsigned int micbias2_lvl:1;
 
-	/* Jack detect threashold levels, see datasheet for values */
+	/* Jack detect threshold levels, see datasheet for values */
 	unsigned int jd_scthr:2;
 	unsigned int jd_thr:2;
 };