dt-bindings: net: dsa: hellcreek: Sync DSA maintainers

The current DSA maintainers are Florian Fainelli, Andrew Lunn and Vladimir
Oltean. Update the hellcreek binding accordingly.

Signed-off-by: Kurt Kanzenbach <[email protected]>
Reviewed-by: Vladimir Oltean <[email protected]>
Acked-by: Rob Herring <[email protected]>
Acked-by: Florian Fainelli <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: shifty91

Documentation/devicetree/bindings/net/dsa/hirschmann,hellcreek.yaml

@@ -12,7 +12,7 @@ allOf:
 maintainers:
   - Andrew Lunn <[email protected]>
   - Florian Fainelli <[email protected]>
-  - Vivien Didelot <vivien.didelot@gmail.com>
+  - Vladimir Oltean <olteanv@gmail.com>
   - Kurt Kanzenbach <[email protected]>
 
 description: