[NFC] Update namespace in warnings for properties_kernel_negative_device.cpp

Author: jsji

sycl/test/extensions/properties/properties_kernel_negative_device.cpp

@@ -3,7 +3,7 @@
 #include <sycl/sycl.hpp>
 
 template <size_t... Is> struct KernelFunctorWithWGSizeWithAttr {
-  // expected-warning@+1 {{kernel has both attribute 'reqd_work_group_size' and kernel properties; conflicting properties are ignored}}
+  // expected-warning@+1 {{kernel has both attribute 'sycl::reqd_work_group_size' and kernel properties; conflicting properties are ignored}}
   void operator() [[sycl::reqd_work_group_size(32)]] () const {}
   auto get(sycl::ext::oneapi::experimental::properties_tag) const {
     return sycl::ext::oneapi::experimental::properties{
@@ -12,7 +12,7 @@ template <size_t... Is> struct KernelFunctorWithWGSizeWithAttr {
 };
 
 template <size_t... Is> struct KernelFunctorWithWGSizeHintWithAttr {
-  // expected-warning@+1 {{kernel has both attribute 'work_group_size_hint' and kernel properties; conflicting properties are ignored}}
+  // expected-warning@+1 {{kernel has both attribute 'sycl::work_group_size_hint' and kernel properties; conflicting properties are ignored}}
   void operator() [[sycl::work_group_size_hint(32)]] () const {}
   auto get(sycl::ext::oneapi::experimental::properties_tag) const {
     return sycl::ext::oneapi::experimental::properties{
@@ -21,7 +21,7 @@ template <size_t... Is> struct KernelFunctorWithWGSizeHintWithAttr {
 };
 
 template <uint32_t I> struct KernelFunctorWithSGSizeWithAttr {
-  // expected-warning@+1 {{kernel has both attribute 'reqd_sub_group_size' and kernel properties; conflicting properties are ignored}}
+  // expected-warning@+1 {{kernel has both attribute 'sycl::reqd_sub_group_size' and kernel properties; conflicting properties are ignored}}
   void operator() [[sycl::reqd_sub_group_size(32)]] () const {}
   auto get(sycl::ext::oneapi::experimental::properties_tag) const {
     return sycl::ext::oneapi::experimental::properties{
@@ -30,7 +30,7 @@ template <uint32_t I> struct KernelFunctorWithSGSizeWithAttr {
 };
 
 template <sycl::aspect Aspect> struct KernelFunctorWithDeviceHasWithAttr {
-  // expected-warning@+1 {{kernel has both attribute 'device_has' and kernel properties; conflicting properties are ignored}}
+  // expected-warning@+1 {{kernel has both attribute 'sycl::device_has' and kernel properties; conflicting properties are ignored}}
   void operator() [[sycl::device_has(sycl::aspect::cpu)]] () const {}
   auto get(sycl::ext::oneapi::experimental::properties_tag) const {
     return sycl::ext::oneapi::experimental::properties{