USB: quirky device for cdc-acm

here's a quirklist entry reported by Stephen Murphy.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 023cf5d..d38a25f 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1099,6 +1099,10 @@
 	{ USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */
 	.driver_info = SINGLE_RX_URB, /* firmware bug */
 	},
+	{ USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */
+	.driver_info = NO_UNION_NORMAL, /* has no union descriptor */
+	},
+
 	/* control interfaces with various AT-command sets */
 	{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
 		USB_CDC_ACM_PROTO_AT_V25TER) },