build-sys: add missing header file to Makefile.am

Fixes: #2700

diff --git a/Makefile.am b/Makefile.am
index 627a076..d7d58cc 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -3299,6 +3299,7 @@ libsystemd_network_la_SOURCES = \
        src/libsystemd-network/dhcp-identifier.h \
        src/libsystemd-network/dhcp-identifier.c \
        src/libsystemd-network/lldp.h \
+       src/libsystemd-network/lldp-internal.h \
        src/libsystemd-network/lldp-network.h \
        src/libsystemd-network/lldp-network.c \
        src/libsystemd-network/lldp-neighbor.h \