am f84f4746: (-s ours) Update qemu kernels to latest variant.

* commit 'f84f4746f8e75b1eb2b1b192b7487f4e85ca4c22':
  Update qemu kernels to latest variant.
tree: 736f13ca8dbe95aef73f5b3e6988adc9205eebe5
  1. arm/
  2. arm64/
  3. kernel-toolchain/
  4. mips/
  5. mips64/
  6. x86/
  7. x86_64/
  8. build-kernel.sh