Add object/interface update methods

Add methods that handle both adding/updating
objects/interfaces.

Change-Id: I3c682365aad18f439babfb0413f29af05327eead
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/configure.ac b/configure.ac
index 83d063e..47d70d4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -21,10 +21,9 @@
 
 # Checks for libraries.
 PKG_CHECK_MODULES([SYSTEMD], [libsystemd >= 221])
-PKG_CHECK_MODULES([SDBUSPLUS], [sdbusplus],,
-    AC_MSG_ERROR(["Requires sdbusplus package."]))
-PKG_CHECK_MODULES([PHOSPHOR_DBUS_INTERFACES], [phosphor-dbus-interfaces],,
-    AC_MSG_ERROR(["Requires phosphor-dbus-interfaces package."]))
+PKG_CHECK_MODULES([SDBUSPLUS], [sdbusplus],, AC_MSG_ERROR(["Requires sdbusplus package."]))
+PKG_CHECK_MODULES([PHOSPHOR_DBUS_INTERFACES], [phosphor-dbus-interfaces],, AC_MSG_ERROR(["Requires phosphor-dbus-interfaces package."]))
+PKG_CHECK_MODULES([PHOSPHOR_LOGGING], [phosphor-logging],, AC_MSG_ERROR(["Requires phosphor-logging."]))
 
 # Checks for typedefs, structures, and compiler characteristics.
 AX_CXX_COMPILE_STDCXX_14([noext])