Don't hardcore 'yes', use  in configure.ac output

Oops, I assumed intel was always enable, but it just defaults to on.
diff --git a/configure.ac b/configure.ac
index fff3b61..39bc81e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -183,6 +183,8 @@
 	   else
 		    INTEL=no
 	   fi
+    else
+	   INTEL=yes
     fi
 fi
 
@@ -213,7 +215,7 @@
 echo ""
 echo "$PACKAGE_STRING will be compiled with:"
 echo ""
-echo "  Intel api      yes"
-echo "  Radeon api     $RADEON"
+echo "  Intel API      $INTEL"
+echo "  Radeon API     $RADEON"
 echo "  Nouveau API    $NOUVEAU"
 echo ""