Make it build under Android

Replace version_gen.h with hardcoded version_non_gen.h
Add Android.mk and libfdt/Android.mk
Change dtc-parser.tab.h to dtc-parser.h (in dtc-lexer.l)

Change-Id: If7b8ac5fdad41294298161b3e800fc81347be415
diff --git a/dtc-lexer.l b/dtc-lexer.l
index 40bbc87..7032f46 100644
--- a/dtc-lexer.l
+++ b/dtc-lexer.l
@@ -36,7 +36,7 @@
 %{
 #include "dtc.h"
 #include "srcpos.h"
-#include "dtc-parser.tab.h"
+#include "dtc-parser.h"
 
 YYLTYPE yylloc;
 extern bool treesource_error;