zte's code,first commit

Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/build/compiler/gcc-4.9.4_thumb_linux/utils/yacc b/build/compiler/gcc-4.9.4_thumb_linux/utils/yacc
new file mode 100755
index 0000000..2df8b37
--- /dev/null
+++ b/build/compiler/gcc-4.9.4_thumb_linux/utils/yacc
@@ -0,0 +1,2 @@
+#! /bin/sh
+exec '/usr/local/bin/bison' -y "$@"