[media] of: Add vendor prefix for Aptina Imaging

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -20,6 +20,7 @@ amlogic	Amlogic, Inc.
 ams	AMS AG
 amstaos	AMS-Taos Inc.
 apm	Applied Micro Circuits Corporation (APM)
+aptina	Aptina Imaging
 arm	ARM Ltd.
 armadeus	ARMadeus Systems SARL
 asahi-kasei	Asahi Kasei Corp.