ryu: update prebuilt kernel [ DO NOT MERGE ] am: e38c7db26f  -s ours
am: 70622a90d3

Change-Id: Iba909dbbe176129328e4a7263d141f70bb32c15d
tree: 65d7dca4b820652baeabbb68243551ba24410128
  1. Image.fit
  2. push-kernel.sh