Patch merged into coreboot/master: xcompile: Separate flags from clang executable

the following patch was just integrated into master:
commit f3e60d0d6957b7d12b09c4e13d63275e493bb7bc
Author: Martin Roth 
Date:   Tue Jan 5 14:34:59 2016 -0700

xcompile: Separate flags from clang executable

We already have a CFLAGS variable - Use it for all of the flags.

Change-Id: I22b4c5cf24b8743e85ffab29ddcccdc6c732ea3b
    Signed-off-by: Martin Roth 
    Reviewed-on: https://review.coreboot.org/12840
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi

See https://review.coreboot.org/12840 for details.

-gerrit