I don't know if this is a option for you, but the person of the gym I go to has found out I am trans, and she has been great about it. So, she gave me exercises that help me with the specific needs I have.
You don't really have to come out as TG if it would bother you or you are trying for some stealth, but I suppose asking your gym instructors about losing hip fat won't hurt. It is not common, but some guys do gain fat in that area and asking around wouldn't necessarily out you. My ex used to be like that, he´d gain fat first at his hips, then next to his belly, and he was a cisguy.
I guess, to lose fat you have to lose weight and if you want to speed it up that would work, though of course I have no personal experience with losing hip fat, as my problem is the exact opposite. But, when I began my HRT I lost a lot of weight, and everything else I gained since then has went to my hips and thighs, so I suppose the opposite could work for you as in: Lose weight to lose that hip fat, then work out to build up muscle on your upper body.