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/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index cb01209..53450f4 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -332,7 +332,7 @@
 	int				i;
 
 	if (!pdata) {
-		dev_err(dev, "Missing platfrom data\n");
+		dev_err(dev, "Missing platform data\n");
 		ret = -ENOMEM;
 		goto end_probe;
 	}