I forgot that x11 was part of the custom ABI of thunks. #2672 had broken
thunks on ARM64. I thought I had tested a game with them enabled but
apparently I tested the wrong game.
Not a full revert since we can still ldr with a literal, but we also
still need to adr x11 and nop pad. At least removes the data dependency
on x11 from the ldr.