opusfile: add hash for license file

Signed-off-by: Rahul Bedarkar <rahulbedarkar89@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/opusfile/opusfile.hash

@@ -1,2 +1,5 @@
 # From http://downloads.xiph.org/releases/opus/SHA256SUMS.txt
 sha256 f75fb500e40b122775ac1a71ad80c4477698842a8fe9da4a1b4a1a9f16e4e979  opusfile-0.9.tar.gz
+
+# Hash for license file
+sha256 0267ae795ab744c4e0f9c45e249440fdf2e75dac8c804f36066b28649bf74aaf  COPYING