Updated gitignore to ignore Linux build intermediates
Updated gitignore to ignore Linux build intermediates

LongSoft/UEFITool,tuxuser/UEFITool,tuxuser/UEFITool,RafaelRMachado/UEFITool,mxxxc/UEFITool,LongSoft/UEFITool,LongSoft/UEFITool,mxxxc/UEFITool,RafaelRMachado/UEFITool,tuxuser/UEFITool