If a file can't be added by cbfstool, print the type and name of the file
in the error message.
Change-Id: I369d6f5be09ec53ee5beea2cfea65a80407f0ba3
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/271
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>