ARM: bcm2835: dt: Add vendor prefix for Raspberry Pi

Since the prefix is already in use, we need to add it in the
vendor list.

Reviewed-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 8033919..3fc90ac 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -159,6 +159,7 @@
 raidsonic	RaidSonic Technology GmbH
 ralink	Mediatek/Ralink Technology Corp.
 ramtron	Ramtron International
+raspberrypi	Raspberry Pi Foundation
 realtek Realtek Semiconductor Corp.
 renesas	Renesas Electronics Corporation
 ricoh	Ricoh Co. Ltd.