linuxboot.bin is a generated file

Signed-off-by: NJuan Quintela <quintela@redhat.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

.gitignore

@@ -46,6 +46,7 @@ qemu-monitor.texi
 patches
 pc-bios/bios-pq/status
 pc-bios/vgabios-pq/status
+pc-bios/optionrom/linuxboot.bin
 pc-bios/optionrom/multiboot.bin
 pc-bios/optionrom/multiboot.raw
 .stgit-*