[coreboot-gerrit] Patch merged into coreboot/master: Makefile: Set HOSTCC as gcc or cc respectively

the following patch was just integrated into master:
commit 1bb4083859b848b9ffe98ca9fdfbd10adcf482dd
Author: zbao 
Date:   Thu Nov 5 15:33:33 2015 +0800

Makefile: Set HOSTCC as gcc or cc respectively

The HOSTCC should be set in .xcompile, which tests the existence of gcc
    and cc. But the .xcompile has to be included after kconfig/Makefile. So
    building util/kconfig uses the seperated HOSTCC definition above it,
    instead of the one in .xcompile.

For the system which clang is the default host compiler, gcc is not
    installed by default. In that case, we need to set HOSTCC as cc.

Change-Id: I1e51a37c4426e2c97d36a31f26a18ab4b0d0608d
    Signed-off-by: Zheng Bao 
    Reviewed-on: http://review.coreboot.org/12331
    Tested-by: build bot (Jenkins)
    Reviewed-by: Martin Roth

See http://review.coreboot.org/12331 for details.

-gerrit