mapi/vgapi: Add SConscript for Windows build.
diff --git a/src/SConscript b/src/SConscript
index b8a0024..9eda35e 100644
--- a/src/SConscript
+++ b/src/SConscript
@@ -4,6 +4,7 @@
 SConscript('mapi/glapi/SConscript')
 
 if 'egl' in env['statetrackers']:
+    SConscript('mapi/vgapi/SConscript')
     SConscript('egl/main/SConscript')
 
 if 'mesa' in env['statetrackers']: