Fix Windows ROCm tarball extraction and compiler paths

- Add --strip-components=1 to tar to remove top-level directory
  (therock-dist-windows-gfx1151-7.11.0rc2/)
- Update clang/clang++ paths to lib/llvm/bin/ (actual location in tarball)
- Clang is at lib/llvm/bin/clang.exe, not bin/clang.exe
- This matches the actual directory structure of the extracted tarball

Author: superm1

.github/workflows/build.yml

@@ -76,7 +76,7 @@ jobs:
           Invoke-WebRequest -Uri "https://repo.amd.com/rocm/tarball/therock-dist-windows-gfx1151-${{ env.ROCM_VERSION }}.tar.gz" -OutFile "${env:RUNNER_TEMP}\rocm.tar.gz"
           write-host "Extracting ROCm tarball"
           mkdir C:\TheRock\build -Force
-          tar -xzf "${env:RUNNER_TEMP}\rocm.tar.gz" -C C:\TheRock\build
+          tar -xzf "${env:RUNNER_TEMP}\rocm.tar.gz" -C C:\TheRock\build --strip-components=1
           write-host "Completed ROCm extraction"
 
       - name: Setup ROCm Environment
@@ -93,17 +93,16 @@ jobs:
         run: |
           mkdir build
           cd build
-          $env:CMAKE_PREFIX_PATH="${env:HIP_PATH};${env:HIP_PATH}\lib\cmake\hip"
           cmake .. `
             -G "Unix Makefiles" `
+            -DCMAKE_PREFIX_PATH="${env:HIP_PATH}" `
             -DSD_HIPBLAS=ON `
             -DSD_BUILD_SHARED_LIBS=ON `
             -DGGML_NATIVE=OFF `
-            -DCMAKE_C_COMPILER=clang `
-            -DCMAKE_CXX_COMPILER=clang++ `
-            -DCMAKE_HIP_COMPILER="${env:HIP_PATH}\bin\clang.exe" `
+            -DCMAKE_C_COMPILER="${env:HIP_PATH}\lib\llvm\bin\clang.exe" `
+            -DCMAKE_CXX_COMPILER="${env:HIP_PATH}\lib\llvm\bin\clang++.exe" `
+            -DCMAKE_HIP_COMPILER="${env:HIP_PATH}\lib\llvm\bin\clang.exe" `
             -DHIP_PATH="${env:HIP_PATH}" `
-            -DHIP_DIR="${env:HIP_PATH}\lib\cmake\hip" `
             -DCMAKE_BUILD_TYPE=Release `
             -DGPU_TARGETS="${{ env.GPU_TARGETS }}"
           cmake --build . --config Release --parallel ${env:NUMBER_OF_PROCESSORS}