GlobalISel: fix GOT accesses on AArch64.

We were using the correct pseudo-instruction, but because the operand's flags
weren't set correctly we still ended up emitting incorrect relocations during
MC lowering.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289566 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed