of: add vendor prefix for ISEE 2007 S.L.

This trivial patch adds ISEE 2007 S.L. to the list of
devicetree vendor prefixes.

Acked-by: Kumar Gala <galak@codeaurora.org>
Signed-off-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -58,6 +58,7 @@ idt	Integrated Device Technologies, Inc.
 img	Imagination Technologies Ltd.
 intel	Intel Corporation
 intercontrol	Inter Control Group
+isee	ISEE 2007 S.L.
 isl	Intersil
 karo	Ka-Ro electronics GmbH
 lacie	LaCie