[cogl] build: Use the correct variable to indicate of cogl-gles2 will be built

[Robert Bragg <rbragg src gnome org>]

commit 016f2276823a8a8cde33d3e7062c61469921a9f1
Author: Damien Lespiau <damien lespiau intel com>
Date:   Mon Sep 17 21:38:29 2012 +0100

    build: Use the correct variable to indicate of cogl-gles2 will be built
    
    Instead of using the variable to use in Makefile.ams.
    
    Reviewed-by: Robert Bragg <robert linux intel com>

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 7a9d61f..e84f4b4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1251,7 +1251,7 @@ fi
 if test "x$SUPPORT_SDL" = "xyes"; then
 echo "        Support GLES under SDL: ${SUPPORT_SDL_GLES}"
 fi
-echo "        Build libcogl-gles2 GLES 2.0 frontend api: ${BUILD_COGL_GLES2}"
+echo "        Build libcogl-gles2 GLES 2.0 frontend api: ${enable_cogl_gles2}"
 echo "        Image backend: ${COGL_IMAGE_BACKEND}"
 echo "        Cogl Pango: ${enable_cogl_pango}"
 echo "        Profiling: ${enable_profile}"