Fixed missing parent ioctl call

src/drivers/gps/gps.cpp

@@ -234,6 +234,11 @@ GPS::ioctl(struct file *filp, int cmd, unsigned long arg)
 			break;
 		}
 
+		default:
+		/* give it to parent if no one wants it */
+		ret = CDev::ioctl(filp, cmd, arg);
+		break;
+
 	unlock();
 
 	return ret;