[Matrix][AMX] correct REQUIRES field since they are gpu testcase (#10964)

Author: yubingex007-a11y

sycl/test-e2e/Matrix/XMX8/joint_matrix_colA_rowB_colC.cpp

@@ -5,7 +5,7 @@
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
-// REQUIRES: matrix
+// REQUIRES: matrix-xmx8
 
 // RUN: %{build} -o %t.out -DSYCL_EXT_ONEAPI_MATRIX_VERSION=4
 // RUN: %{run} %t.out

sycl/test-e2e/Matrix/XMX8/joint_matrix_transposeC.cpp

@@ -5,7 +5,7 @@
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
-// REQUIRES: matrix
+// REQUIRES: matrix-xmx8
 
 // RUN: %{build} -o %t.out -DSYCL_EXT_ONEAPI_MATRIX_VERSION=4
 // RUN: %{run} %t.out