package/scrub: add license hash

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/scrub/scrub.hash

@@ -1,2 +1,5 @@
 # Locally computed
 sha256  838b061b2e1932b342fb9695c5579cdff5d2d72506cb41d6d8032eba18aed969  scrub-2.6.1.tar.gz
+# License files, locally calculated
+sha256  204d8eff92f95aac4df6c8122bc1505f468f3a901e5a4cc08940e0ede1938994  COPYING
+sha256  f76abbfb80cde1036cb553cdecb08bb846a48e33c91ef56c0f494172fd407f33  DISCLAIMER