[llvm] AMDGPU: Stop copying triple into AMDGPUSubtarget (PR #184147)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `intel-sycl-gpu` running on `intel-sycl-gpu-01` while building `llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/225/builds/2736

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

```
Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'libomptarget :: x86_64-unknown-linux-gnu :: tools/llvm-omp-device-info.c' FAILED ********************
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 1
/home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/./bin/llvm-offload-device-info | /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/./bin/FileCheck /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/llvm-project/offload/test/tools/llvm-omp-device-info.c
# executed command: /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/./bin/llvm-offload-device-info
# .---command stderr------------
# | [Liboffload error 1]: zeInit failed with error 2013265921, ZE_RESULT_ERROR_UNINITIALIZED
# `-----------------------------
# error: command failed with exit status: 1
# executed command: /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/./bin/FileCheck /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/llvm-project/offload/test/tools/llvm-omp-device-info.c
# .---command stderr------------
# | FileCheck error: '<stdin>' is empty.
# | FileCheck command line:  /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/./bin/FileCheck /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/llvm-project/offload/test/tools/llvm-omp-device-info.c
# `-----------------------------
# error: command failed with exit status: 2

--

********************

Step 7 (test-build-unified-tree-check-sycl) failure: test (failure)
...
  File "/home/test-user/llvm-buildbot-worker/intel-sycl-gpu/llvm-project/libsycl/test/lit.cfg.py", line 165, in <module>
    sycl_ls_output = subprocess.check_output(sycl_ls, text=True, shell=True)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/subprocess.py", line 466, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/subprocess.py", line 571, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '/home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/bin/sycl-ls' returned non-zero exit status 1.

FAILED: libsycl/test/CMakeFiles/check-sycl /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/runtimes/runtimes-bins/libsycl/test/CMakeFiles/check-sycl 
cd /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/runtimes/runtimes-bins/libsycl/test && /home/test-user/bbenv/bin/python3 /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/./bin/llvm-lit -v -vv /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/runtimes/runtimes-bins/libsycl/test
ninja: build stopped: subcommand failed.
FAILED: runtimes/CMakeFiles/check-sycl /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/runtimes/CMakeFiles/check-sycl 
cd /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/runtimes/runtimes-bins && /usr/bin/cmake --build /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/runtimes/runtimes-bins/ --target check-sycl --config Release
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/184147