edid: Ignore built binary

Added in commit 72d277a7.
Signed-off-by: NEric Blake <eblake@redhat.com>
Message-id: 20181004140522.945682-1-eblake@redhat.com
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

.gitignore

@@ -107,6 +107,7 @@
 /qemu-doc.html
 /qemu-doc.info
 /qemu-doc.txt
+/qemu-edid
 /qemu-img
 /qemu-nbd
 /qemu-options.def