Define the create interface for VLAN

Network Manager may implement multiple interface object
Create interface helps in creating specific interface.

Create interface declares the interface for creating
a specific object.

Change-Id: I7433a8569f7e08f9ceb0ff8d01e8c42b04b3b5af
Signed-off-by: Ratan Gupta <ratagupt@in.ibm.com>
diff --git a/configure.ac b/configure.ac
index 56a430c..17a8efb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -27,6 +27,9 @@
 PKG_CHECK_MODULES([SDBUSPLUS], [sdbusplus],,\
 AC_MSG_ERROR(["Requires sdbusplus package."]))
 
+
+AC_PATH_PROG([SDBUSPLUSPLUS], [sdbus++])
+
 PKG_CHECK_MODULES([PHOSPHOR_LOGGING], [phosphor-logging],,\
 AC_MSG_ERROR(["Requires phosphor-logging package."]))