Add getProperty and getService utility functions

Upcoming code will use them.

Change-Id: I7c6618a3a7479a7ed0a7d41dad92a222a45a3ba4
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/Makefile.am b/Makefile.am
index ef4d98b..72698b7 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -9,6 +9,8 @@
 	$(PHOSPHOR_LOGGING_CFLAGS) \
 	$(SDBUSPLUS_CFLAGS)
 
-libpower_la_SOURCES = timer.cpp
+libpower_la_SOURCES = \
+	timer.cpp \
+	utility.cpp
 
 SUBDIRS = .