gitignore: ignore tar-install build directory

Have git ignore the Debian directory created when running:
     make tar-pkg / targz-pkg / tarbz2-pkg / tarxz-pkg

Signed-off-by: Andrey Skvortsov <andrej.skvortzov@gmail.com>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Boaz Harrosh <boaz@plexistor.com>
Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

.gitignore

@@ -52,6 +52,11 @@ Module.symvers
 #
 /debian/
 
+#
+# tar directory (make tar*-pkg)
+#
+/tar-install/
+
 #
 # git files that we don't want to ignore even it they are dot-files
 #