[coreboot-gerrit] Patch merged into coreboot/master: crossgcc: Add Dockerfile

the following patch was just integrated into master:
commit fe222005b813975d7370fd8c91a10fc46e4f9c93
Author: Patrick Georgi 
Date:   Sun Sep 18 20:11:15 2016 +0200

crossgcc: Add Dockerfile

The dockerfile allows building an image with the current tree's
    crossgcc code.

Change-Id: I59cd85b0acdf8776e3e090742d7f5d89d1c154e7
    Signed-off-by: Patrick Georgi 
    Reviewed-on: https://review.coreboot.org/16636
    Tested-by: build bot (Jenkins)
    Reviewed-by: Paul Menzel 
    Reviewed-by: Martin Roth

See https://review.coreboot.org/16636 for details.

-gerrit