Merge 'aosp/master' into android-msm-bluecross-4.9-pie-qpr1

* aosp/master:
  initial release of kernel/build in AOSP

This consolidates the kernel/build scripts for the common kernels and
for the devices using such kind of scripts (currently only the mentioned one).

Change-Id: Iec009d9c0e414f38b96541274ff567018f32b719