[clang] [HIP][Driver] Forward -fcoverage-mapping flags to device compiler (PR #198872)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

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

Full details are available at: https://lab.llvm.org/buildbot/#/builders/157/builds/46912

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

```
Step 6 (test-build-unified-tree-check-flang) failure: 1200 seconds without output running [b'ninja', b'check-flang'], attempting to kill
...
PASS: Flang :: Transforms/debug-fake-use.fir (4492 of 4502)
PASS: Flang :: Driver/fopenmp.f90 (4493 of 4502)
PASS: Flang :: Transforms/simplify-fir-operations.fir (4494 of 4502)
PASS: Flang :: Lower/OpenMP/requires-usm.f90 (4495 of 4502)
PASS: Flang :: Transforms/tbaa-local-alloc-threshold.fir (4496 of 4502)
PASS: Flang :: Transforms/OpenACC/acc-implicit-data-fortran.F90 (4497 of 4502)
PASS: Flang :: Transforms/debug-dwarf-version.fir (4498 of 4502)
PASS: Flang :: Driver/linker-options.f90 (4499 of 4502)
PASS: Flang :: Driver/omp-driver-offload.f90 (4500 of 4502)
PASS: Flang :: Transforms/vscale-attr.fir (4501 of 4502)
command timed out: 1200 seconds without output running [b'ninja', b'check-flang'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=2482.083820

```

</details>

https://github.com/llvm/llvm-project/pull/198872