sim: update to reduce generated file differences

[Frank Ch. Eigler]

Hi -

> Put binutils-gdb commit db7858e227f3 (Mike Frysinger 2015-06-12) and
> 13a590ca65f7 (Mike Frysinger 2017-02-13) in the source rather than
> generated files.

Please feel free to commit changes this obvious.

- FChE