Patch merged into coreboot/master: 1a29c1e libpayload: fix compiler flags

the following patch was just integrated into master:
commit 1a29c1e7665c22476b74d469952d7e689d475cdf
Author: Ronald G. Minnich 
Date:   Thu Feb 14 15:26:09 2013 -0800

libpayload: fix compiler flags

lpgcc was unconditionally setting -m32.

Most of the flags it sets in the common case are right, however: no need
    to duplicate them everywhere, and we only want to change the common ones
    in one place, so it would be a shame to duplicate _CFLAGS all over the place.

So add another variable, _ARCHEXTRA, which can be used to add
    special flags to _CFLAGS. We onlu use it at present for the x86; this may
    change.

This allows us to get through compiling on arm and x86.

Change-Id: I12f1620982c4ee10f76b3953e4225f13db31531e
    Signed-off-by: Ronald G. Minnich 
    Reviewed-on: http://review.coreboot.org/2399
    Tested-by: build bot (Jenkins)
    Reviewed-by: Gabe Black

Build-Tested: build bot (Jenkins) at Fri Feb 15 00:53:42 2013, giving +1
Reviewed-By: Gabe Black  at Fri Feb 15 06:26:44 2013, giving +2
See http://review.coreboot.org/2399 for details.

-gerrit