perl-mime-base64: add license hash

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/perl-mime-base64/perl-mime-base64.hash

@@ -1,3 +1,6 @@
 # retrieved by scancpan from http://cpan.metacpan.org/
 md5    ef958dc2bf96be5f759391c6ac1debd4 MIME-Base64-3.15.tar.gz
 sha256 7f863566a6a9cb93eda93beadb77d9aa04b9304d769cea3bb921b9a91b3a1eb9 MIME-Base64-3.15.tar.gz
+
+# computed by scancpan
+sha256 08e6898e3d62619e83880832ec42ae8a2984257e4c244843db9d3b9b7fcff236 README