Enable PSUSensor support

Add psusensor service to enable PSUSensor.

Tested By:
After BMC started, run ipmitool sensor list, all PSU sensors can show
correct name and value.

Signed-off-by: Cheng C Yang <cheng.c.yang@linux.intel.com>
Change-Id: I55d52c3cc71243a1db10a47551872b458ad9d21b
diff --git a/CMakeLists.txt b/CMakeLists.txt
index dc88000..e3bf538 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -222,4 +222,7 @@
 
 if (NOT DISABLE_PSU)
     install (TARGETS psusensor DESTINATION bin)
+    install (FILES
+                 ${SERVICE_FILE_SRC_DIR}/xyz.openbmc_project.psusensor.service
+                 DESTINATION ${SERVICE_FILE_INSTALL_DIR})
 endif ()