Security: tomoyo: add .gitignore file

This adds the .gitignore file for the autogenerated TOMOYO files to keep
git from complaining after building things.

Cc: Kentaro Takeda <takedakn@nttdata.co.jp>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/tomoyo/.gitignore b/security/tomoyo/.gitignore
new file mode 100644
index 0000000..5caf1a6
--- /dev/null
+++ b/security/tomoyo/.gitignore
@@ -0,0 +1,2 @@
+builtin-policy.h
+policy/