Update instructions when check_config could not run.

Before you can run check_config, both setup and build need to be run.

Change-Id: Ie84386e3011102be417215f851454292a4b60813
diff --git a/cobaltb.py b/cobaltb.py
index 991e5e9..d8368ea 100755
--- a/cobaltb.py
+++ b/cobaltb.py
@@ -129,8 +129,8 @@
   config_parser_bin = os.path.join(OUT_DIR, 'config', 'config_parser',
       'config_parser')
   if not os.path.isfile(config_parser_bin):
-    print('%s could not be found. Run "%s build" and try again.'
-        % (config_parser_bin, sys.argv[0]))
+    print('%s could not be found. Run \n\n%s setup\n%s build\n\nand try again.'
+        % (config_parser_bin, sys.argv[0], sys.argv[0]))
     return
   subprocess.check_call([config_parser_bin, '-config_dir', args.config_dir,
       '-check_only'])