[AMDGPU][MC] Corrected VOP3 version of v_interp_* instructions for VI

See bug 32621: https://bugs.llvm.org//show_bug.cgi?id=32621

Reviewers: vpykhtin, SamWot, arsenm

Differential Revision: https://reviews.llvm.org/D35902

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310251 91177308-0d34-0410-b5e6-96231b3b80d8
9 files changed