Patch merged into coreboot/master: external/Makefile.inc: Update SeaBIOS version file

the following patch was just integrated into master:
commit 886f47892502df15d9bb4fd0e4be3a2bde1aa5f6
Author: Martin Roth 
Date:   Sat Nov 28 13:23:48 2015 -0700

external/Makefile.inc: Update SeaBIOS version file

SeaBIOS updated how versioning is done, and out/version.c no longer
    exists.  The new file with version information is autoversion.h.

Change-Id: I10abee73ecc51e52c9ff7a2e7a9099339b1a4b40
    Signed-off-by: Martin Roth 
    Reviewed-on: https://review.coreboot.org/12567
    Tested-by: build bot (Jenkins)
    Reviewed-by: Idwer Vollering 
    Reviewed-by: Paul Menzel

See https://review.coreboot.org/12567 for details.

-gerrit