Patch merged into coreboot/master: libpayload: .xcompile target is an actual file

the following patch was just integrated into master:
commit 5d5fcdd82b72c1fc621aab9fd6ff88cce9345d8e
Author: Paul Kocialkowski 
Date:   Mon Aug 3 16:44:01 2015 +0200

libpayload: .xcompile target is an actual file

Marking .xcompile as PHONY implies triggering the xcompile script each time make
    is invoked. This is particularly problematic, especially when the script cannot
    find the crossgcc toolchains on its own and has to be fed XGCCPATH.

Change-Id: Icb5ae82b210bca1ee9cf56d76130eefde481f81e
    Signed-off-by: Paul Kocialkowski 
    Reviewed-on: http://review.coreboot.org/11118
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi

See http://review.coreboot.org/11118 for details.

-gerrit