buildroot: move to 2017.05.2
Update to the latest point release of buildroot 2017.05.
There are no security fixes to packages used by op-build. Some patches
were made to packages used by op-build to resolve download, compilation
or runtime issues.
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/buildroot b/buildroot
index 9b91216..9d4c067 160000
--- a/buildroot
+++ b/buildroot
@@ -1 +1 @@
-Subproject commit 9b91216f7794ea679a990d107b79136827491989
+Subproject commit 9d4c06793f79bbf5ec37788189119a05f32bed02