[kernel] add kernel-4* to .gitignore

[Kyle McMartin]

commit 4e47fdae64224d7eea6463cb54e7a459c330442c
Author: Kyle McMartin <kmcmarti at redhat.com>
Date:   Fri Mar 13 12:54:51 2015 -0400

    add kernel-4* to .gitignore

 .gitignore | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitignore b/.gitignore
index b30f1f6..2a888b2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,5 +3,5 @@ clog
 *.bz2
 *.rpm
 *.orig
-kernel-[23].*/
+kernel-[234].*/
 perf-man-*.tar.gz