[llvm] [AMDGPU] Support TFE D16 format buffer loads on gfx8/10/11/12 (PR #211465)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `ppc64le-mlir-rhel-clang` running on `ppc64le-mlir-rhel-test` while building `llvm` at step 6 "test-build-check-mlir-build-only-check-mlir".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/129/builds/52603

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (test-build-check-mlir-build-only-check-mlir) failure: 1200 seconds without output running [b'ninja', b'check-mlir'], attempting to kill
...
PASS: MLIR :: Transforms/test-canonicalize-filter.mlir (4602 of 4613)
PASS: MLIR :: Transforms/test-canonicalize-merge-large-blocks.mlir (4603 of 4613)
PASS: MLIR :: mlir-tblgen/interfaces.mlir (4604 of 4613)
PASS: MLIR :: mlir-tblgen/llvm-intrinsics.td (4605 of 4613)
PASS: MLIR :: mlir-runner/sgemm-naive-codegen.mlir (4606 of 4613)
PASS: MLIR :: mlir-runner/simple.mlir (4607 of 4613)
PASS: MLIR :: Pass/pipeline-options-parsing.mlir (4608 of 4613)
PASS: MLIR :: Pass/pipeline-parsing.mlir (4609 of 4613)
PASS: MLIR :: mlir-reduce/opt-reduction/cse-test.mlir (4610 of 4613)
PASS: MLIR :: mlir-reduce/opt-reduction/dce-test.mlir (4611 of 4613)
command timed out: 1200 seconds without output running [b'ninja', b'check-mlir'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=2465.174013

```

</details>

https://github.com/llvm/llvm-project/pull/211465