Add xml entries for cl_img_external_semaphore_fast_path extension

Author: paulfradgley

xml/cl.xml

@@ -2484,7 +2484,8 @@ server's OpenCL/api-docs repository.
         <enum value="0x4229"        name="CL_COMMAND_QUEUE_SCHEDULING_WORK_GROUP_ARBITRATION_ALGORITHM_TASK_DEMAND_IMG"/>
         <enum value="0x422A"        name="CL_COMMAND_QUEUE_SCHEDULING_WORK_GROUP_ARBITRATION_ALGORITHM_ROUND_ROBIN_IMG"/>
         <enum value="0x422B"        name="CL_COMMAND_QUEUE_SCHEDULING_WORK_GROUP_EXECUTE_COUNT_IMG"/>
-            <unused start="0x422C" end="0x422F"/>
+        <enum value="0x422C"        name="CL_SEMAPHORE_FAST_PATH_IMG"/>
+            <unused start="0x422D" end="0x422F"/>
     </enums>
 
     <enums start="0x4230" end="0x423F" name="enums.4230" comment="Reserved for EXT extensions">
@@ -8030,6 +8031,14 @@ server's OpenCL/api-docs repository.
                 <enum name="CL_SVM_ALLOC_EXTERNAL_MEMORY_DMA_BUF_IMG"/>
             </require>
         </extension>
+        <extension name="cl_img_external_semaphore_fast_path" revision="0.2.0" supported="opencl" depends="cl_khr_external_semaphore_sync_fd" experimental="true">
+            <require>
+                <type name="CL/cl.h"/>
+            </require>
+            <require comment="cl_semaphore_properties_khr">
+                <enum name="CL_SEMAPHORE_FAST_PATH_IMG"/>
+            </require>
+        </extension>
         <extension name="cl_khr_unified_svm" revision="0.9.0" condition="defined(CL_VERSION_2_0)" supported="opencl" experimental="true">
             <require comment="cl_platform_info">
                 <enum name="CL_PLATFORM_SVM_TYPE_CAPABILITIES_KHR"/>