gitignore: ignore debian build directory

Have git ignore the Debian directory created when running:
	make deb-pkg

Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu>
Signed-off-by: Michal Marek <mmarek@suse.cz>
diff --git a/.gitignore b/.gitignore
index 9dacde0..57af07c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -46,6 +46,11 @@
 /Module.symvers
 
 #
+# Debian directory (make deb-pkg)
+#
+/debian/
+
+#
 # git files that we don't want to ignore even it they are dot-files
 #
 !.gitignore