Add a few more OUT_EAT_PREFIX flags

Based on testing the instructions individually.  Cuts a few cases in God Eater Burst where instructions bailed out of jit.

Had to do these instructions by hand.  I set all the prefixes, do the op, then did a vadd.q to see if the prefixes still apply.

Also, vuc2i doesn't match hardware afaict... starting to think it'll be easier to test these by always writing `.word` and assembling ourselves, I'm a little worried some could be mis-assembling.

-[Unknown]