usb: qcserial: Add support for PID 0x904c

Product Id 0x904c includes DIAG, SER3(System monitor), SER4(EFS sync),
DUN, CSVT, NET1, NET2, NET3, NET4 device interfaces.

Change-Id: I6d774dacbda5be5964b049ff412b78797b84c444
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
index b29a974..44e887c 100644
--- a/drivers/usb/serial/qcserial.c
+++ b/drivers/usb/serial/qcserial.c
@@ -1,7 +1,7 @@
 /*
  * Qualcomm Serial USB driver
  *
- *	Copyright (c) 2008 QUALCOMM Incorporated.
+ *	Copyright (c) 2008, 2012 QUALCOMM Incorporated.
  *	Copyright (c) 2009 Greg Kroah-Hartman <gregkh@suse.de>
  *	Copyright (c) 2009 Novell Inc.
  *
@@ -82,7 +82,8 @@
 	{USB_DEVICE(0x16d8, 0x8002)},	/* CMDTech Gobi 2000 Modem device (VU922) */
 	{USB_DEVICE(0x05c6, 0x9204)},	/* Gobi 2000 QDL device */
 	{USB_DEVICE(0x05c6, 0x9205)},	/* Gobi 2000 Modem device */
-	{USB_DEVICE(0x05c6, 0x9048)},
+	{USB_DEVICE(0x05c6, 0x9048)},	/* MDM9x15 device */
+	{USB_DEVICE(0x05c6, 0x904C)},	/* MDM9x15 device */
 	{ }				/* Terminating entry */
 };
 MODULE_DEVICE_TABLE(usb, id_table);