Bluetooth: Add support for Broadcom BCM20702A0

Since this device declares itself as vendor specific, must add
a new entry to device ID table to support it.

usb-device output of this device:

T: Bus=01 Lev=02 Prnt=02 Port=03 Cnt=01 Dev#= 3 Spd=12 MxCh= 0
D: Ver= 2.00 Cls=ff(vend.) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=413c ProdID=8197 Rev=01.12
S: Manufacturer=Broadcom Corp
S: Product=BCM20702A0
S: SerialNumber=D0DF9AA9C9F1
C: #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr=0mA
I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none)
I: If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none)
I: If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
I: If#= 3 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=01 Driver=(none)

Signed-off-by: Wen-chien Jesse Sung <[e-mail]>
Signed-off-by: Gustavo F. Padovan <[e-mail]>

drivers/bluetooth/btusb.c

···
 	/* Canyon CN-BTU1 with HID interfaces */
 	{ USB_DEVICE(0x0c10, 0x0000) },
 
+	/* Broadcom BCM20702A0 */
+	{ USB_DEVICE(0x413c, 0x8197) },
+
 	{ }	/* Terminating entry */
 };