scripts/dtc: Update shipped files to build with bison 2.7.12

Preparation patch before updating to upstream dtc version 1.4.0. This
change only contains the changes caused by a new version of bison
on the shipped files. There are no functional changes.

The shipped files were build on an Ubuntu 13.10 system

Signed-off-by: Grant Likely <grant.likely@linaro.org>