buildroot: Update to 80a2f83e

Jeremy Kerr (1):
      package/petitboot: Update to 83a3159f

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
diff --git a/buildroot b/buildroot
index 9ac423f..80a2f83 160000
--- a/buildroot
+++ b/buildroot
@@ -1 +1 @@
-Subproject commit 9ac423f6f0d99b33e7bb7ad703cf83e80716da8a
+Subproject commit 80a2f83e60f3fd21a38e2bc9aac149f2c3a9ffdd