AMDGPU: Rename flat operands to match mubuf

Use vaddr/vdst for the same purposes.

This also fixes a beg in SIInsertWaits for the
operand check. The stored value operand is currently called
data0 in the single offset case, not data.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@288188 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed