obmc-console: Convert build to meson

The project is seeing some activity recently, so let's align it with the
desires here:

https://gerrit.openbmc.org/c/openbmc/docs/+/47732

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I96941365440c9c164d222b4d18e6a57409819308
diff --git a/test/test-config-parse-logsize.c b/test/test-config-parse-logsize.c
index 49aef3a..964d894 100644
--- a/test/test-config-parse-logsize.c
+++ b/test/test-config-parse-logsize.c
@@ -3,8 +3,10 @@
 #include <stdint.h>
 #include <stdio.h>
 
+#ifndef SYSCONFDIR
 // Bypass compilation error due to -DSYSCONFDIR not provided
 #define SYSCONFDIR
+#endif
 
 #include "config.c"