dt-bindings: net: broadcom-bluetooth: Document BCM4329 support

The BCM4329 is a 802.11 a/b/g/n WiFi + Bluetooth 2.1 chip which is found
in Azurewave AW-NH611 WiFi+BT module.
Signed-off-by: NDmitry Osipenko <digetx@gmail.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

Documentation/devicetree/bindings/net/broadcom-bluetooth.txt

@@ -11,6 +11,7 @@ Required properties:
 
  - compatible: should contain one of the following:
    * "brcm,bcm20702a1"
+   * "brcm,bcm4329-bt"
    * "brcm,bcm4330-bt"
    * "brcm,bcm43438-bt"
    * "brcm,bcm4345c5"