Re-enable cl_khr_int64_base_atomics

This reverts commit bee2150.

Change-Id: Ifd015f8bbdf790342b4b60c40a01112f769435d0

Author: AdamCetnerowski

runtime/platform/extensions.cpp

@@ -32,7 +32,9 @@ const char *deviceExtensionsList = "cl_khr_3d_image_writes "
                                    "cl_intel_driver_diagnostics "
                                    "cl_khr_priority_hints "
                                    "cl_khr_throttle_hints "
-                                   "cl_khr_create_command_queue ";
+                                   "cl_khr_create_command_queue "
+                                   "cl_khr_int64_base_atomics "
+                                   "cl_khr_int64_extended_atomics ";
 
 std::string getExtensionsList(const HardwareInfo &hwInfo) {
     std::string allExtensionsList;

unit_tests/api/cl_get_device_info_tests.inl

@@ -178,6 +178,8 @@ TEST_F(clGetDeviceInfoTests, GivenClDeviceExtensionsParamWhenGettingDeviceInfoTh
         "cl_intel_accelerator ",
         "cl_intel_media_block_io ",
         "cl_intel_driver_diagnostics ",
+        "cl_khr_int64_base_atomics ",
+        "cl_khr_int64_extended_atomics ",
     };
 
     for (auto element = 0u; element < sizeof(supportedExtensions) / sizeof(supportedExtensions[0]); element++) {