Fix to sql upgrade script 2.2.1-2.2.2

Sql upgrade scripts were being executed with the wrong sequence.

I had a very old version of this extension which I decided to upgrade. It was getting stuck on 2.2.1-2.2.2

Upon investigation, I've found that there was a file named mysql4-upgrade-1.2.1-1.2.2.php which looks like a mistake. So I moved the query out of that file and placed it to the 2.2.1-2.2.2 one, and things worked!