[PATCH net-next] tools: ynl-gen: fix nested policy attribute type

[Arkadiusz Kubalewski]

When nested multi-attribute is used in yaml spec, generated type in
the netlink policy is NLA_NEST, which is wrong as there is no such type.
Fix be adding `ed` sufix for policy generated for 'nest' type attribute
when the attribute is parsed as TypeMultiAttr class.

Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@xxxxxxxxx>
---
 tools/net/ynl/ynl-gen-c.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tools/net/ynl/ynl-gen-c.py b/tools/net/ynl/ynl-gen-c.py
index 9adcd785db0b..0b5e0802a9a7 100755
--- a/tools/net/ynl/ynl-gen-c.py
+++ b/tools/net/ynl/ynl-gen-c.py
@@ -498,6 +498,16 @@ class TypeArrayNest(Type):
         else:
             raise Exception(f"Sub-type {self.attr['sub-type']} not supported yet")
 
+    def attr_policy(self, cw):
+        t = self.attr['type']
+        if (t == 'nest'):
+            policy = c_upper(f'nla-{t}ed')
+        else:
+            policy = c_upper(f'nla-{t}')
+
+        spec = self._attr_policy(policy)
+        cw.p(f"\t[{self.enum_name}] = {spec},")
+
     def _attr_typol(self):
         return f'.type = YNL_PT_NEST, .nest = &{self.nested_render_name}_nest, '
 
-- 
2.37.3