gitignore: ignore more files

ignore *.patch, *.gcda, *.gcno

Signed-off-by: liguang <lig.fnst@cn.fujitsu.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
diff --git a/.gitignore b/.gitignore
index 27ad002..9c234a3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -80,6 +80,9 @@
 *.swp
 *.orig
 .pc
+*.patch
+*.gcda
+*.gcno
 patches
 pc-bios/bios-pq/status
 pc-bios/vgabios-pq/status