Patch merged into coreboot/master: cbfstool: Add bintohex function

the following patch was just integrated into master:
commit ca97fa7ac3c035532bbf493613c644514313a190
Author: Patrick Georgi 
Date:   Thu Oct 1 15:52:56 2015 +0200

cbfstool: Add bintohex function

We need to emit some hex strings.

Change-Id: I9e7e184282f6ad0470f2e269f5dc874e78f8b697
    Signed-off-by: Patrick Georgi 
    Reviewed-on: http://review.coreboot.org/11766
    Tested-by: build bot (Jenkins)
    Reviewed-by: Aaron Durbin

See http://review.coreboot.org/11766 for details.

-gerrit