ryu: update kernel prebuilt
am: 212c37eb58

Change-Id: Iff164d432e4cc01528256be68c8cb7d7807fdf07
tree: 2bfc6ab85ebaa93b23d923cb4e1dcc1e0e3f4ad4
  1. Image.fit
  2. Image.fit.kasan
  3. push-kernel.sh