clc: use spirv triple starting with llvm-17

It's supported since a while and shouldn't regress anything.

Signed-off-by: Karol Herbst <kherbst@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26955>

src/compiler/clc/clc_helpers.cpp

@@ -775,7 +775,11 @@ clc_compile_to_llvm_module(LLVMContext &llvm_ctx,
                                        &c->getDiagnosticOpts())
    };
 
+#if LLVM_VERSION_MAJOR >= 17
+   const char *triple = args->address_bits == 32 ? "spirv-unknown-unknown" : "spirv64-unknown-unknown";
+#else
    const char *triple = args->address_bits == 32 ? "spir-unknown-unknown" : "spir64-unknown-unknown";
+#endif
 
    std::vector<const char *> clang_opts = {
       args->source.name,