ryu: update kernel prebuilt
am: 69b06639d5

Change-Id: Iad26fff673200bf0f5cbeffa937232a88ae9755b
tree: 8d506e53b0c00fa943c282df6e12f1e82f00e844
  1. Image.fit
  2. Image.fit.kasan
  3. push-kernel.sh