dt-bindings: vendor-prefixes: Add prefix for PocketBook International SA

Call it "pocketbook".
Signed-off-by: Ondrej Jirman <megous@megous.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -767,6 +767,8 @@ patternProperties:
     description: Broadcom Corporation (formerly PLX Technology)
   "^pni,.*":
     description: PNI Sensor Corporation
+  "^pocketbook,.*":
+    description: PocketBook International SA
   "^polaroid,.*":
     description: Polaroid Corporation
   "^portwell,.*":