cros-kernel2: Make clang the default compiler for kernel builds
clang is the CrOS default compiler for current and future kernels,
reflect this in the .eclass. Only kernels >= v4.4 have support for
being built with clang, hence build older kernels with gcc.
BUG=chromium:891028,chromium:897984
TEST=kernels >= v4.4 are built with clang, older ones with gcc
CQ-DEPEND=CL:1307996
Change-Id: I6cc9a22eed8d7617fe2495beea0451c80b24580c
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1294370
Reviewed-by: Mike Frysinger <vapier@chromium.org>
2 files changed
