Add docs and util files to .gitignore

This adds...
- generated documentation files
- all kinds of stuff in the util subdirectories

Change-Id: I47ab6d239aae725f54413f03424f40002ac5a275
Signed-off-by: Stefan Tauner <stefan.tauner@gmx.at>
Reviewed-on: http://review.coreboot.org/1572
Tested-by: build bot (Jenkins)
Reviewed-by: Peter Stuge <peter@stuge.se>
1 file changed