opera: mark as restricted

We are not allowed to redistribute the software and therefor have to set
it as restricted.

http://www.operasoftware.com/eula/browser

> User shall not and shall not allow any third party to:
> (d) sublicense, lease, rent, loan, or distribute the Software or Services to
> any third party;

srcpkgs/opera/template

@@ -9,6 +9,7 @@ maintainer="Diogo Leal <diogo@diogoleal.com>"
 license="Proprietary"
 repository="nonfree"
 homepage="http://www.opera.com/browser/"
+restricted=yes
 
 if [ "${XBPS_TARGET_MACHINE}" = "x86_64" ];then
 	_debarch=amd64