[SYCL] Prepare info::device::atomic64 for removal (#22456)

Fixes issue #14920 

This PR guards all `info::device::atomic64` related code to be removed in the next ABI-breaking window.

Author: Robertkq

sycl/include/sycl/info/device.hpp

@@ -411,11 +411,13 @@ struct __SYCL2020_DEPRECATED("deprecated in SYCL 2020, use "
   using return_type = bool;
 };
 
-// Extensions/deprecated
+#ifndef __INTEL_PREVIEW_BREAKING_CHANGES
 struct __SYCL_DEPRECATED("use sycl::aspect::atomic64 instead") atomic64
     : device_traits<UR_DEVICE_INFO_ATOMIC_64> {
   using return_type = bool;
 };
+#endif // __INTEL_PREVIEW_BREAKING_CHANGES
+
 struct reference_count : device_traits<UR_DEVICE_INFO_REFERENCE_COUNT> {
   using return_type = uint32_t;
 };

sycl/source/detail/device_impl.hpp

@@ -1248,7 +1248,7 @@ class device_impl {
     CASE(int64_extended_atomics) {
       return has_extension("cl_khr_int64_extended_atomics");
     }
-    CASE(atomic64) { return get_info<info::device::atomic64>(); }
+    CASE(atomic64) { return get_info_impl<UR_DEVICE_INFO_ATOMIC_64>(); }
     CASE(image) { return get_info<info::device::image_support>(); }
     CASE(online_compiler) {
       return get_info<info::device::is_compiler_available>();

sycl/source/device.cpp

@@ -279,7 +279,9 @@ __SYCL_DEVICE_INFO_INST(partition_affinity_domains,
 __SYCL_DEVICE_INFO_INST(partition_type_property, info::partition_property)
 __SYCL_DEVICE_INFO_INST(partition_type_affinity_domain,
                         info::partition_affinity_domain)
+#ifndef __INTEL_PREVIEW_BREAKING_CHANGES
 __SYCL_DEVICE_INFO_INST(atomic64, bool)
+#endif // __INTEL_PREVIEW_BREAKING_CHANGES
 __SYCL_DEVICE_INFO_INST(reference_count, uint32_t)
 __SYCL_DEVICE_INFO_INST(usm_device_allocations, bool)
 __SYCL_DEVICE_INFO_INST(usm_host_allocations, bool)