package/libsquish: add license file hash

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 9b377e9dcfbad9025cfcc87d95735a61bd8722ca)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libsquish/libsquish.hash

@@ -1,3 +1,5 @@
 # From http://sourceforge.net/projects/libsquish/files
 sha1 51844b9a8bc815a27e2cc0ffbede5fee3ef75110 libsquish-1.15.tgz
 md5 c02645800131e55b519ff8dbe7284f93 libsquish-1.15.tgz
+# Locally calculated
+sha256 a6b8c383bf3ab28460d6507484d605dd722e03971606f0cd3032a3af682b63a5  LICENSE.txt