Add unsupported cpu comment

Author: ggojska

sycl/test-e2e/Matrix/SG32/joint_matrix_bfloat16_accumulator.cpp

@@ -9,6 +9,8 @@
 // UNSUPPORTED: gpu-intel-dg2
 // UNSUPPORTED-INTENDED: SG size = 32 is not supported for SYCL Joint Matrix on
 // DG2
+// UNSUPPORTED: cpu
+// UNSUPPORTED-INTENDED: Different C and D types are not supported on AMX
 
 // REQUIRES: target-spir
 // REQUIRES: aspect-ext_intel_matrix

sycl/test-e2e/Matrix/SG32/joint_matrix_half_accumulator.cpp

@@ -9,6 +9,8 @@
 // UNSUPPORTED: gpu-intel-dg2
 // UNSUPPORTED-INTENDED: SG size = 32 is not supported for SYCL Joint Matrix on
 // DG2
+// UNSUPPORTED: cpu
+// UNSUPPORTED-INTENDED: Different C and D types are not supported on AMX
 
 // REQUIRES: target-spir
 // REQUIRES: aspect-ext_intel_matrix

sycl/test-e2e/Matrix/joint_matrix_bfloat16_accumulator.cpp

@@ -5,6 +5,10 @@
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: cpu
+// UNSUPPORTED-INTENDED: Different C and D types are not supported on AMX
+
 // REQUIRES: target-spir
 
 // REQUIRES: aspect-ext_intel_matrix

sycl/test-e2e/Matrix/joint_matrix_half_accumulator.cpp

@@ -5,6 +5,10 @@
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: cpu
+// UNSUPPORTED-INTENDED: Different C and D types are not supported on AMX
+
 // REQUIRES: target-spir
 
 // REQUIRES: aspect-fp16