ryu: update kernel prebuilt[ DO NOT MERGE ] am: a4f6b68f99  -s ours am: 993e6eaf9f
am: d10aab9ea5

Change-Id: I396b7a2fd23111531600c988ad8ee894f7fb6482
tree: 2bfc6ab85ebaa93b23d923cb4e1dcc1e0e3f4ad4
  1. Image.fit
  2. Image.fit.kasan
  3. push-kernel.sh