Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c
index f591f61..1fcb41a 100644
--- a/drivers/mtd/onenand/omap2.c
+++ b/drivers/mtd/onenand/omap2.c
@@ -608,7 +608,7 @@
 
 	ret = regulator_enable(c->regulator);
 	if (ret != 0)
-		dev_err(&c->pdev->dev, "cant enable regulator\n");
+		dev_err(&c->pdev->dev, "can't enable regulator\n");
 
 	return ret;
 }
@@ -620,7 +620,7 @@
 
 	ret = regulator_disable(c->regulator);
 	if (ret != 0)
-		dev_err(&c->pdev->dev, "cant disable regulator\n");
+		dev_err(&c->pdev->dev, "can't disable regulator\n");
 
 	return ret;
 }