dt-bindings: Add Macnica Americas vendor prefix

Add a vendor prefix for the Macnica company.
http://http://www.macnica.comSigned-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -159,6 +159,7 @@ lg	LG Corporation
 linux	Linux-specific binding
 lltc	Linear Technology Corporation
 lsi	LSI Corp. (LSI Logic)
+macnica	Macnica Americas
 marvell	Marvell Technology Group Ltd.
 maxim	Maxim Integrated Products
 meas	Measurement Specialties