USB: remove info() macro from usb/serial drivers

USB should not be having it's own printk macros, so remove info() and
use the system-wide standard of dev_info() wherever possible.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 0d18a40..3d87eab 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -420,7 +420,8 @@
 	if (retval)
 		goto failed_driver_register;
 
-	info(DRIVER_DESC ": " DRIVER_VERSION);
+	printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
+	       DRIVER_DESC "\n");
 
 	return 0;