dt-bindings: Add vendor prefix for Logic PD

Logic PD is an electronics design, engineering and manufacturing
company, which offers system on module and baseboard products.

Website: https://www.logicpd.com/Signed-off-by: NVladimir Zapolskiy <vz@mleia.com>
Signed-off-by: NRob Herring <robh@kernel.org>

Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -201,6 +201,7 @@ linaro	Linaro Limited
 linksys	Belkin International, Inc. (Linksys)
 linux	Linux-specific binding
 lltc	Linear Technology Corporation
+logicpd	Logic PD, Inc.
 lsi	LSI Corp. (LSI Logic)
 lwn	Liebherr-Werk Nenzing GmbH
 macnica	Macnica Americas