Fix lit test for interp f16
Fix lit test for interp f16

I forgot to commit this along with the previous change to interp
f16. The additional mode register changes altered the order of
instructions, so I have altered the test to produce the same
ordering as previously.

Change-Id: Ied460b5a9cc3576552c35a6eedcd661e7e8d251d

GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm