Update submodule target/ryuglab/linux

New commit contains new configuration, that will be used for measuring
kernel folder configuration options.

diff --git a/targets/ryuglab/linux b/targets/ryuglab/linux
index 86fb81882f6a70298b4806f407474df1fb926cbb..5aaf6d0c54859a6189cef7f15d74e1f9416c036f 160000 (submodule)
--- a/targets/ryuglab/linux
+++ b/targets/ryuglab/linux
@@ -1 +1 @@
-Subproject commit 86fb81882f6a70298b4806f407474df1fb926cbb
+Subproject commit 5aaf6d0c54859a6189cef7f15d74e1f9416c036f