Merge cherrypicks of [6075228, 6075392] into oc-m8-release

Change-Id: I68d0ebaacac26eb4035bcfe75bd77ebac0917eb8
tree: 04e2c9c6054f48a9884df349c33ccb2834386f36
  1. .prebuilt_info/
  2. Image.fit
  3. Image.fit.kasan
  4. push-kernel.sh