ryu: update kernel prebuilt am: 7de3b2a8da
am: b571c32f3a

Change-Id: Ie110d65ef4abbc0b41caefd9cc413384b4b4d656
tree: dcd71f9f06006ebc7adf756c2929922ea41c48cc
  1. Image.fit
  2. Image.fit.kasan
  3. push-kernel.sh