[SYCL][CODEOWNERS] Update CODEOWNERS for Native CPU Device (intel#10096)

have @intel/dpcpp-nativecpu-pi-reviewers own:
sycl/plugins/native_cpu/
sycl/test/check_device_code/native_cpu/
sycl/test/native_cpu/
clang/include/clang/Basic/SYCLNativeCPUHelpers.h
clang/test/CodeGenSYCL/native_cpu_basic.cpp
clang/test/Driver/sycl-native-cpu-fsycl.cpp
clang/test/Driver/sycl-native-cpu-warn.cpp
clang/test/Driver/sycl-native-cpu.cpp
llvm/include/llvm/SYCLLowerIR/EmitSYCLNativeCPUHeader.h
llvm/include/llvm/SYCLLowerIR/PrepareSYCLNativeCPU.h
llvm/lib/SYCLLowerIR/EmitSYCLNativeCPUHeader.cpp
llvm/lib/SYCLLowerIR/PrepareSYCLNativeCPU.cpp
sycl/doc/design/SYCLNativeCPU.md

---------

Co-authored-by: PietroGhg <38155419+PietroGhg@users.noreply.github.com>
Co-authored-by: Alexey Bader <alexey.bader@intel.com>

.github/CODEOWNERS

@@ -105,3 +105,12 @@ sycl/test-e2e/KernelFusion @victor-eds @Naghasan @sommerlukas
 
 # Matrix tests
 sycl/test-e2e/Matrix @dkhaldi @YuriPlyakhin @yubingex007-a11y
+
+# Native CPU
+llvm/**/*SYCLNativeCPU* @intel/dpcpp-nativecpu-pi-reviewers 
+clang/include/clang/Basic/SYCLNativeCPUHelpers.h @intel/dpcpp-nativecpu-pi-reviewers 
+clang/test/CodeGenSYCL/native_cpu*.cpp @intel/dpcpp-nativecpu-pi-reviewers 
+clang/test/Driver/sycl-native-cpu*.cpp @intel/dpcpp-nativecpu-pi-reviewers 
+sycl/**/native_cpu/ @intel/dpcpp-nativecpu-pi-reviewers
+sycl/doc/design/SYCLNativeCPU.md @intel/dpcpp-nativecpu-pi-reviewers
+sycl/include/sycl/detail/native_cpu.hpp @intel/dpcpp-nativecpu-pi-reviewers