Staging: gdm724x: gdm_usb.c: fix missing blank line after variable declaration

Checkpatch fix - Add missing blank line after variable declaration
Signed-off-by: Kiran Padwal <kiran.padwal21@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/gdm724x/gdm_usb.c

@@ -896,6 +896,7 @@ static void gdm_usb_disconnect(struct usb_interface *intf)
 	struct lte_udev *udev;
 	u16 idVendor, idProduct;
 	struct usb_device *usbdev;
+
 	usbdev = interface_to_usbdev(intf);
 
 	idVendor = __le16_to_cpu(usbdev->descriptor.idVendor);