or: Missing .inc file in include.am

Fixes #40173

Signed-off-by: David Goulet <dgoulet@torproject.org>

src/core/or/include.am

@@ -71,6 +71,7 @@ noinst_HEADERS +=					\
 	src/core/or/entry_port_cfg_st.h			\
 	src/core/or/extend_info_st.h			\
 	src/core/or/listener_connection_st.h		\
+	src/core/or/lttng_circuit.inc			\
 	src/core/or/onion.h				\
 	src/core/or/or.h				\
 	src/core/or/or_periodic.h			\