[SYCL][CUDA] Mark tests as UNSUPPORTED on CUDA

Marks two tests as UNSUPPORTED on CUDA as the tested funcitonality
has not been fully implemented yet.

Signed-off-by: Alexander Johnston <[email protected]>

Author: Alexander Johnston

sycl/test/basic_tests/buffer/subbuffer.cpp

@@ -4,6 +4,8 @@
 // RUN: %GPU_RUN_PLACEHOLDER %t.out
 // RUN: %ACC_RUN_PLACEHOLDER %t.out
 
+// UNSUPPORTED: cuda
+
 //==---------- subbuffer.cpp --- sub-buffer basic test ---------------------==//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

sycl/test/kernel_from_file/hw.cpp

@@ -6,8 +6,7 @@
 
 // TODO: InvalidTargetTriple: Expects spir-unknown-unknown or spir64-unknown-unknown. Actual target triple is x86_64-unknown-linux-gnu
 
-// XFAIL: cuda
-// Currently unsupported on cuda as this test specifically tests a SPV path.
+// UNSUPPORTED: cuda
 
 #include <CL/sycl.hpp>
 #include <iostream>