Patch merged into coreboot/master: cbfstool: provide buffer_offset()

the following patch was just integrated into master:
commit 2dd5f4cce61f95468cd84d7272b8c455d0b6408b
Author: Aaron Durbin 
Date:   Tue Jan 26 09:01:14 2016 -0600

cbfstool: provide buffer_offset()

Instead of people open coding the offset field access within a
    struct buffer provide buffer_offset() so that the implementation
    can change if needed without high touch in the code base.

Change-Id: I751c7145687a8529ab549d87e412b7f2d1fb90ed
    Signed-off-by: Aaron Durbin 
    Reviewed-on: https://review.coreboot.org/13468
    Tested-by: build bot (Jenkins)
    Reviewed-by: Werner Zeh

See https://review.coreboot.org/13468 for details.

-gerrit