tree 2e8072cd139cd56efaaf3aacd5c28a656db35cf1
parent bccbaba4163f32f6430b5c08d41fd483e76afe56
author Rashed Abdel-Tawab <rashed@linux.com> 1559624442 -0700
committer Jackeagle <jackeagle102@gmail.com> 1562322921 -0400

kernel: Set correct kernel compiler prefixes for aarch64 clang

These configuration options are set based on the Google configurations
located in kernels
(ex. https://github.com/LineageOS/android_kernel_google_wahoo/blob/lineage-16.0/build.config)

This is composed of 2 parts:

Revert "kernel: Correct CROSS_COMPILE_ARM32 toolchain"

This reverts commit c77bb3a5ba45699aeef45d3af8b8a0a59f0c6a14.
This breaks builds when building with upstream commit
ad15006cc78459d059af56729c4d9bed7c7fd860. That commit fixes LD being
used from outside the path, however androidkernel toolchains don't
have elfedit. Google specifically doesn't use androidkernel, so we
need to follow them on this.

Set CROSS_COMPILE_PREFIX to aarch64-linux-android- for clang builds

Upstream commit ad15006cc78459d059af56729c4d9bed7c7fd860 makes the
kernel build system use GCC toolchains for elfedit, so we have to
actually use a real GCC toolchain, not the androidkernel one.

Change-Id: I79ac4ac47d3ba6c2abbc5ce40e56ed5c707295b4