package/knock: add hash file

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/knock/knock.hash

@@ -0,0 +1,2 @@
+# locally computed hash
+sha256 9938479c321066424f74c61f6bee46dfd355a828263dc89561a1ece3f56578a4 knock-0.7.tar.gz