Patch merged into coreboot/master: 18ff4f1 build system: create .xcompile dependency

the following patch was just integrated into master:
commit 18ff4f166beef62175a81e9ffc7390d4a0ae5b64
Author: Patrick Georgi 
Date:   Thu Jul 10 21:06:04 2014 +0200

build system: create .xcompile dependency

It's probably safe to say that .xcompile needs an update if
    util/xcompile/xcompile changed, so tell make about this
    dependency.

Updates are honored immediately due to GNU make's feature of
    reinterpreting everything when an included file changes.  See "How
    Makefiles Are Remade" in the GNU make documentation for details.

Change-Id: Ide2f028eaddcee66028c6403688cc83e1622fa6b
    Signed-off-by: Patrick Georgi 
    Reviewed-on: http://review.coreboot.org/6255
    Tested-by: build bot (Jenkins)
    Reviewed-by: Edward O'Callaghan

See http://review.coreboot.org/6255 for details.

-gerrit