tools: ynl-gen: use enum names in op strmap more carefully

In preparation for supporting families which use different msg
ids to and from the kernel - make sure the ids in op strmap
are correct. The map is expected to be used mostly for notifications,
don't generate a separate map for the "to kernel" direction.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>

tools/net/ynl/lib/nlspec.py

@@ -442,6 +442,10 @@ class SpecFamily(SpecElement):
             else:
                 raise Exception("Can't parse directional ops")
 
+            if req_val == req_val_next:
+                req_val = None
+            if rsp_val == rsp_val_next:
+                rsp_val = None
             op = self.new_operation(elem, req_val, rsp_val)
             req_val = req_val_next
             rsp_val = rsp_val_next