Define interfaces of ipaddress object

Change-Id: Ic7cb6ca0deb3e005b2c753adbe2b88c13dff7120
Signed-off-by: Ratan Gupta <ratagupt@in.ibm.com>
diff --git a/Makefile.am b/Makefile.am
index d5bc9b3..6035365 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -11,7 +11,8 @@
 
 noinst_HEADERS = \
 		ethernet_interface.hpp \
-		network_manager.hpp
+		network_manager.hpp \
+		ipaddress.hpp
 
 phosphor_network_manager_SOURCES = \
 		ethernet_interface.cpp \