Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/regulator/max8952.c b/drivers/regulator/max8952.c
index a8f4ecf..daff7fd 100644
--- a/drivers/regulator/max8952.c
+++ b/drivers/regulator/max8952.c
@@ -262,7 +262,7 @@
 
 	if (err) {
 		dev_warn(max8952->dev, "VID0/1 gpio invalid: "
-				"DVS not avilable.\n");
+				"DVS not available.\n");
 		max8952->vid0 = 0;
 		max8952->vid1 = 0;
 		/* Mark invalid */