dt-bindings: vendor-prefixes: update regex for properties without a prefix

Update vendor-prefixes.yaml to allow property names without a prefix
to contain '#' character in all positions

Signed-off-by: Kael D'Alcamo <[email protected]>
Signed-off-by: Rob Herring (Arm) <[email protected]>

Author: kael-k

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -1862,7 +1862,7 @@ patternProperties:
 
   # Normal property name match without a comma
   # These should catch all node/property names without a prefix
-  "^[a-zA-Z0-9#_][a-zA-Z0-9+\\-._@]{0,63}$": true
+  "^[a-zA-Z0-9#_][a-zA-Z0-9#+\\-._@]{0,63}$": true
   "^[a-zA-Z0-9+\\-._]*@[0-9a-zA-Z,]*$": true
   "^#.*": true