of: Add Avago Technologies vendor prefix

This commit adds a device tree vendor prefix for Avago Technologies.
Signed-off-by: NOleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -11,6 +11,7 @@ amcc	Applied Micro Circuits Corporation (APM, formally AMCC)
 apm	Applied Micro Circuits Corporation (APM)
 arm	ARM Ltd.
 atmel	Atmel Corporation
+avago	Avago Technologies
 bosch	Bosch Sensortec GmbH
 brcm	Broadcom Corporation
 cavium	Cavium, Inc.