Android Security 8.0.0 Release 53 (6893676)
Merge cherrypicks of [2549122, 2549155] into oc-release

Change-Id: I4bea635e9e668a766a611c1266effc0aa659304c
tree: 81a83ec6c147dd6701d7e5464cbb70abd373fa1d
  1. Image.fit
  2. Image.fit.kasan
  3. push-kernel.sh