CHROMIUM: allow 32bpp framebuffers for cirrus drm

BUG=chromium:413962
TEST=Start CrOS under qemu and run `modetest -M cirrus -s 19:800x600`

Signed-off-by: Zach Reizner <zachr@chromium.org>
Change-Id: I7dfbe1902186cd68d2a720c6a588c4e027ed933f
Reviewed-on: https://chromium-review.googlesource.com/219341
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Reviewed-by: Corbin Simpson <simpsoco@chromium.org>
UPSTREAM: x86, build: Pass in additional -mno-mmx, -mno-sse options

Backported from 3.14. We need this for the roll to GCC 4.9.
Vectorizer is more aggresive in GCC 4.9.
This is the original commit entry from upstream:

In checkin

    5551a34e5aea x86-64, build: Always pass in -mno-sse

we unconditionally added -mno-sse to the main build, to keep newer
compilers from generating SSE instructions from autovectorization.
However, this did not extend to the special environments
(arch/x86/boot, arch/x86/boot/compressed, and arch/x86/realmode/rm).
Add -mno-sse to the compiler command line for these environments, and
add -mno-mmx to all the environments as well, as we don't want a
compiler to generate MMX code either.

This patch also removes a $(cc-option) call for -m32, since we have
long since stopped supporting compilers too old for the -m32 option,
and in fact hardcode it in other places in the Makefiles.

BUG=chromium:423463
TEST=cbuildbot --hwtest falco
     both with gcc 4.8 and 4.9

Change-Id: Ie05d8ac06f66f3345e27714abe657acf65e89c57
Reported-by: Kevin B. Smith <kevin.b.smith@intel.com>
Cc: Sunil K. Pandey <sunil.k.pandey@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: H. J. Lu <hjl.tools@gmail.com>
Link: http://lkml.kernel.org/n/tip-j21wzqv790q834n7yc6g80j1@git.kernel.org
Cc: <stable@vger.kernel.org> # build fix only
Signed-off-by: Luis Lozano <llozano@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/222882
Reviewed-by: Olof Johansson <olofj@chromium.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Merge branch 'chromeos-3.8' of https://chromium.googlesource.com/chromiumos/third_party/kernel into chromeos-3.8