Add basic .gitignore

Ignore directories created by abuild, jenkins, payloads and crossgcc.

Change-Id: I7d4145fc1e54a10ffdc4b884d8b8f0ae53e615c6
Signed-off-by: Cristian Măgherușan-Stanciu <cristi.magherusan@gmail.com>
Signed-off-by: Peter Stuge <peter@stuge.se>
Reviewed-on: http://review.coreboot.org/10
Tested-by: build bot (Jenkins)
1 file changed