net: dsa: motorcomm: Extend ACL with UDF

The native ACL key set cannot express IP TTL or ICMP type/code. Use the
User Defined Filter windows to match them in the tc flower offload.

Signed-off-by: David Yang <mmyangfl@gmail.com>
Link: https://patch.msgid.link/20261017023136.2961543-1-mmyangfl@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>