dt-bindings: vendor-prefixes: Add mantix vendor prefix

Add prefix for Mantix Display Technology Co.,Ltd.
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/b6bcfe27d9393a07a5cdd82fcf211620c774a273.1597652012.git.agx@sigxcpu.org

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -615,6 +615,8 @@ patternProperties:
     description: Linux Automation GmbH
   "^macnica,.*":
     description: Macnica Americas
+  "^mantix,.*":
+    description: Mantix Display Technology Co.,Ltd.
   "^mapleboard,.*":
     description: Mapleboard.org
   "^marvell,.*":