Update to submodule.

diff --git a/gcc.git b/gcc.git
index 72aaef0..be2e81c 160000 (submodule)
--- a/gcc.git
+++ b/gcc.git
@@ -1 +1 @@
-Subproject commit 72aaef024c3b41d6b99a86d710a79b99df7bc526
+Subproject commit be2e81cc4a2b033646c91915ea1bf632fa7cbe4c