Makefile: Fix library compile flags

We are missing flags for compiling against dependencies used in
libfan.

Change-Id: I62addac0d153be194171acee77ec7a32a503b85c
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/Makefile.am b/Makefile.am
index 3052713..67f49e9 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3,8 +3,12 @@
 noinst_LTLIBRARIES = libfan.la
 libfan_la_LDFLAGS = -static
 libfan_la_LIBADD = \
+	$(PHOSPHOR_DBUS_INTERFACES_LIBS) \
+	$(PHOSPHOR_LOGGING_LIBS) \
 	$(SDBUSPLUS_LIBS)
 libfan_la_CXXFLAGS = \
+	$(PHOSPHOR_DBUS_INTERFACES_CFLAGS) \
+	$(PHOSPHOR_LOGGING_CFLAGS) \
 	$(SDBUSPLUS_CFLAGS) -flto
 libfan_la_SOURCES = \
 	utility.cpp \