ynl: netdev: drop unnecessary enum-as-flags

enum-as-flags can be used when enum declares bit positions but
we want to carry bitmask in an attribute. If the definition
is already provided as flags there's no need to indicate
the flag-iness of the attribute.

Acked-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/r/20231003153416.2479808-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Documentation/netlink/specs/netdev.yaml

@@ -74,7 +74,6 @@ attribute-sets:
         doc: Bitmask of enabled xdp-features.
         type: u64
         enum: xdp-act
-        enum-as-flags: true
       -
         name: xdp-zc-max-segs
         doc: max fragment count supported by ZC driver
@@ -87,7 +86,6 @@ attribute-sets:
              See Documentation/networking/xdp-rx-metadata.rst for more details.
         type: u64
         enum: xdp-rx-metadata
-        enum-as-flags: true
 
 operations:
   list: