am c8e83b5f: (-s ours) Merge "x86_64: new kernel prebuilt"

* commit 'c8e83b5f7a5c1e79d9aa1a0774da4a7f036b19f0':
  x86_64: new kernel prebuilt
tree: 736f13ca8dbe95aef73f5b3e6988adc9205eebe5
  1. arm/
  2. arm64/
  3. kernel-toolchain/
  4. mips/
  5. mips64/
  6. x86/
  7. x86_64/
  8. build-kernel.sh