[SYCL][Driver] Fix sycl-device-traits-macros-amdgcn test (#15633)

Adding missing `FileCheck` line for `-fsycl-targets=amd_gpu_gfx941`
after the pipe `|` to fix the test.

Author: Georgi Mirazchiyski

clang/test/Driver/sycl-device-traits-macros-amdgcn.cpp

@@ -50,8 +50,10 @@
 // RUN:   FileCheck %s --check-prefix=CHECK-SYCL-AMDGCN-AMD-AMDHSA-DEVICE-TRIPLE
 // RUN: %clangxx -fsycl -nogpulib -fsycl-targets=amd_gpu_gfx940 \
 // RUN:   -fsycl-libspirv-path=%S/Inputs/SYCL/libspirv.bc -### %s 2>&1 | \
+// RUN:   FileCheck %s --check-prefix=CHECK-SYCL-AMDGCN-AMD-AMDHSA-DEVICE-TRIPLE
 // RUN: %clangxx -fsycl -nogpulib -fsycl-targets=amd_gpu_gfx941 \
 // RUN:   -fsycl-libspirv-path=%S/Inputs/SYCL/libspirv.bc -### %s 2>&1 | \
+// RUN:   FileCheck %s --check-prefix=CHECK-SYCL-AMDGCN-AMD-AMDHSA-DEVICE-TRIPLE
 // RUN: %clangxx -fsycl -nogpulib -fsycl-targets=amd_gpu_gfx942 \
 // RUN:   -fsycl-libspirv-path=%S/Inputs/SYCL/libspirv.bc -### %s 2>&1 | \
 // RUN:   FileCheck %s --check-prefix=CHECK-SYCL-AMDGCN-AMD-AMDHSA-DEVICE-TRIPLE