Add meson build

This commit is to add meson build.
and later, we will remove Autotools and replace it with meson build.

Tested: built openpower-occ-control successfully and Unit test passes.

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I7f5fbc7150194a78f9b36bb256613fc70b834130
diff --git a/powermode.hpp b/powermode.hpp
index 60befce..fd7d466 100644
--- a/powermode.hpp
+++ b/powermode.hpp
@@ -1,8 +1,8 @@
 #pragma once
 
-#ifdef POWER10
 #include "config.h"
 
+#ifdef POWER10
 #include "occ_status.hpp"
 
 #include <sdbusplus/bus.hpp>