netlink: specs: Add missing bitset attrs to ethtool spec

There are a couple of attributes missing from the 'bitset' attribute-set
in the ethtool netlink spec. Add them to the spec.

Reported-by: Kory Maincent <[email protected]>
Closes: https://lore.kernel.org/netdev/20241017180551.1259bf5c@kmaincent-XPS-13-7390/
Signed-off-by: Donald Hunter <[email protected]>
Reviewed-by: Kory Maincent <[email protected]>
Tested-by: Kory Maincent <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>

Author: donaldh

Documentation/netlink/specs/ethtool.yaml

@@ -96,7 +96,12 @@ attribute-sets:
         name: bits
         type: nest
         nested-attributes: bitset-bits
-
+      -
+        name: value
+        type: binary
+      -
+        name: mask
+        type: binary
   -
     name: string
     attributes: