expand export memory api (#21737)

DMA Buf support was added to bindless images some time ago, but never
hooked up for the memory export extension
(
https://github.com/intel/llvm/blob/sycl/sycl/doc/extensions/experimental/sycl_ext_oneapi_memory_export.asciidoc
)

This PR brings the dma_buf value through SYCL and the UR and adds
testing.

Author: cperkinsintel

source/adapters/level_zero/memory_export.cpp

@@ -23,7 +23,8 @@ ur_result_t urMemoryExportAllocExportableMemoryExp(
     size_t size, ur_exp_external_mem_type_t handleTypeToExport, void **ppMem) {
 
   UR_ASSERT(handleTypeToExport == UR_EXP_EXTERNAL_MEM_TYPE_OPAQUE_FD ||
-                handleTypeToExport == UR_EXP_EXTERNAL_MEM_TYPE_WIN32_NT,
+                handleTypeToExport == UR_EXP_EXTERNAL_MEM_TYPE_WIN32_NT ||
+                handleTypeToExport == UR_EXP_EXTERNAL_MEM_TYPE_DMA_BUF,
             UR_RESULT_ERROR_INVALID_ENUMERATION);
 
   ze_external_memory_export_desc_t MemExportDesc{};
@@ -36,6 +37,9 @@ ur_result_t urMemoryExportAllocExportableMemoryExp(
   case UR_EXP_EXTERNAL_MEM_TYPE_WIN32_NT:
     MemExportDesc.flags = ZE_EXTERNAL_MEMORY_TYPE_FLAG_OPAQUE_WIN32;
     break;
+  case UR_EXP_EXTERNAL_MEM_TYPE_DMA_BUF:
+    MemExportDesc.flags = ZE_EXTERNAL_MEMORY_TYPE_FLAG_DMA_BUF;
+    break;
   default:
     return UR_RESULT_ERROR_INVALID_ENUMERATION;
   }
@@ -89,6 +93,18 @@ ur_result_t urMemoryExportExportMemoryHandleExp(
     *ppMemHandleRet = MemExportWin32.handle;
     break;
   }
+  case UR_EXP_EXTERNAL_MEM_TYPE_DMA_BUF: {
+    MemExportFD.stype = ZE_STRUCTURE_TYPE_EXTERNAL_MEMORY_EXPORT_FD;
+    MemExportFD.flags = ZE_EXTERNAL_MEMORY_TYPE_FLAG_DMA_BUF;
+    MemAllocProps.pNext = &MemExportFD;
+
+    ZE2UR_CALL(zeMemGetAllocProperties,
+               (hContext->getZeHandle(), pMem, &MemAllocProps, nullptr));
+
+    int *pMemHandleRetIntPtr = static_cast<int *>(pMemHandleRet);
+    *pMemHandleRetIntPtr = MemExportFD.fd;
+    break;
+  }
   default: {
     return UR_RESULT_ERROR_INVALID_ENUMERATION;
   }