netlink: specs: rt-route: split out the request attribute list

The newroute and delroute requests alias the same attribute list as the
getroute reply, but requests and replies do not carry the same
attributes. Give the requests their own list.

The two lists are identical today, so the generated code does not
change.

Signed-off-by: Yuyang Huang <sigefriedhyy@gmail.com>
Link: https://patch.msgid.link/20260808005642.26901-9-sigefriedhyy@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Documentation/netlink/specs/rt-route.yaml

@@ -313,7 +313,35 @@ operations:
       do:
         request:
           value: 24
-          attributes: *all-route-attrs
+          attributes: &route-req-attrs
+            - dst
+            - src
+            - iif
+            - oif
+            - gateway
+            - priority
+            - prefsrc
+            - metrics
+            - multipath
+            - flow
+            - cacheinfo
+            - table
+            - mark
+            - mfc-stats
+            - via
+            - newdst
+            - pref
+            - encap-type
+            - encap
+            - expires
+            - pad
+            - uid
+            - ttl-propagate
+            - ip-proto
+            - sport
+            - dport
+            - nh-id
+            - flowlabel
     -
       name: delroute
       doc: Delete an existing route
@@ -321,7 +349,7 @@ operations:
       do:
         request:
           value: 25
-          attributes: *all-route-attrs
+          attributes: *route-req-attrs
     -
       name: newroute-ntf
       doc: Notification about a created route.