libnetfilter_acct: add hash for license file

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libnetfilter_acct/libnetfilter_acct.hash

@@ -1,3 +1,6 @@
 # From ftp://ftp.netfilter.org/pub/libnetfilter_acct/libnetfilter_acct-1.0.3.tar.bz2.{md5sum,sha1sum}
 md5	814b2972b2f5c740ff87510bc109168b	libnetfilter_acct-1.0.3.tar.bz2
 sha1	4b9073e4aa989b0f000c8da1ab01b22fceed52b2	libnetfilter_acct-1.0.3.tar.bz2
+
+# Hash for license file:
+sha256	dc626520dcd53a22f727af3ee42c770e56c97a64fe3adb063799d8ab032fe551	COPYING