Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/mfd/ucb1400_core.c b/drivers/mfd/ucb1400_core.c
index d73f84b..daf6952 100644
--- a/drivers/mfd/ucb1400_core.c
+++ b/drivers/mfd/ucb1400_core.c
@@ -8,7 +8,7 @@
  *  Copyright:	MontaVista Software, Inc.
  *
  * Spliting done by: Marek Vasut <marek.vasut@gmail.com>
- * If something doesnt work and it worked before spliting, e-mail me,
+ * If something doesn't work and it worked before spliting, e-mail me,
  * dont bother Nicolas please ;-)
  *
  * This program is free software; you can redistribute it and/or modify