Patch merged into coreboot/master: util/lint: add check for auto-included headers

the following patch was just integrated into master:
commit 1c9c4b8db8ee791d124638b7381e85bf4298f0f5
Author: Martin Roth 
Date:   Wed Nov 30 10:29:39 2016 -0700

util/lint: add check for auto-included headers

Since we've removed them from the tree, add a check to keep them out.

Change-Id: I2995da765fee8796a297963d54a1c34f56376efe
    Signed-off-by: Martin Roth 
    Reviewed-on: https://review.coreboot.org/17658
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi

See https://review.coreboot.org/17658 for details.

-gerrit