If it helps, all of the A320s with flat beds in business class have IFE in Y. So if your economy class cabin starts from row 9, you're good! If it starts from row 8, there's still a chance you might have it, but not all of them do. Although last-minute aircraft swaps are of course a very real possibility on QR!

https://www.aerolopa.com/qr-320h
https://www.aerolopa.com/qr-320l