change gcc default optimization to S instead of zero. It is causing kernel compilation problems for people
diff --git a/Config.in b/Config.in
index 31633d6..a24fef2 100644
--- a/Config.in
+++ b/Config.in
@@ -253,7 +253,7 @@
 
 choice
 	prompt "gcc optimization level"
-	default BR2_OPTIMIZE_0
+	default BR2_OPTIMIZE_S
 	help
 	  Set the optimization level for gcc