Well, I'm sure most engineers at any computer hardware company have degrees in one or more of Computer Science, Electrical Engineering or Computer Engineering. Certianly related fields like Mathematics, Physics or other branches of engineering are well represented as well. Generally speaking, the best guys I meet in the game/graphics industry are those who clearly paid attention in all of their classes not just the obvious programming ones (i.e. they didn't cop out and say "this is physics, I don't need to know physics, I'm a programmer"). Well rounded is good. And if you want to do graphics, take a killer Linear Algebra class early in your college career and seriously work hard at it. It'll serve as a good base for many concepts you'll see over and over in graphics later on.
-Jason