rocm include path in two e2e tests leads to failures in build stage on CI

[ayylol]

Describe the bug

EnqueueNativeCommand/custom-command-hip.cpp and HostInteropTask/interop-task-hip.cpp fail to build on CI build stage due to rocm include path.

This issue is aknowledged in the tests with the following comment:

// FIXME: the rocm include path and link path are highly platform dependent,
// we should set this with some variable instead.

The failure in CI:

********************
FAIL: SYCL :: HostInteropTask/interop-task-hip.cpp (1292 of 2282)
******************** TEST 'SYCL :: HostInteropTask/interop-task-hip.cpp' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 3
/__w/llvm/llvm/toolchain/bin/clang++  -Werror -fsycl -fsycl-targets=amdgcn-amd-amdhsa -Xsycl-target-backend=amdgcn-amd-amdhsa --offload-arch=gfx1030  /__w/llvm/llvm/llvm/sycl/test-e2e/HostInteropTask/interop-task-hip.cpp -Wno-error=deprecated-pragma -Wno-error=deprecated-declarations -o /__w/llvm/llvm/build-e2e/HostInteropTask/Output/interop-task-hip.cpp.tmp.out -I%rocm_path/include -L%rocm_path/lib -lamdhip64
# executed command: /__w/llvm/llvm/toolchain/bin/clang++ -Werror -fsycl -fsycl-targets=amdgcn-amd-amdhsa -Xsycl-target-backend=amdgcn-amd-amdhsa --offload-arch=gfx1030 /__w/llvm/llvm/llvm/sycl/test-e2e/HostInteropTask/interop-task-hip.cpp -Wno-error=deprecated-pragma -Wno-error=deprecated-declarations -o /__w/llvm/llvm/build-e2e/HostInteropTask/Output/interop-task-hip.cpp.tmp.out -I%rocm_path/include -L%rocm_path/lib -lamdhip64
# .---command stderr------------
# | /__w/llvm/llvm/llvm/sycl/test-e2e/HostInteropTask/interop-task-hip.cpp:15:10: fatal error: 'hip/hip_runtime.h' file not found
# |    15 | #include <hip/hip_runtime.h>
# |       |          ^~~~~~~~~~~~~~~~~~~
# | 1 error generated.
# `-----------------------------
# error: command failed with exit status: 1

--

https://github.com/intel/llvm/actions/runs/13331013654/job/37234912237?pr=16953

To reproduce

Environment

No response

Additional context

No response