Patch merged into coreboot/master: romcc: Allow adding non-existent paths to include path

the following patch was just integrated into master:
commit 3d0ba1c47f81776c9e84bc9718b7100d0a629f96
Author: Stefan Reinauer 
Date:   Wed Nov 18 17:23:39 2015 -0800

romcc: Allow adding non-existent paths to include path

This models gcc's (and other compilers') behavior to not bail
    out with an error when one of the include paths does not exist.

Change-Id: Ic93a55cea6b32516fd76da9b49abe7b990829889
    Signed-off-by: Stefan Reinauer 
    Reviewed-on: http://review.coreboot.org/12469
    Tested-by: build bot (Jenkins)
    Reviewed-by: Martin Roth 
    Reviewed-by: Patrick Georgi 
    Reviewed-by: Marc Jones

See http://review.coreboot.org/12469 for details.

-gerrit