Build error fix after pulling sycl branch

Author: dongkyunahn-intel

sycl/plugins/esimd_emulator/pi_esimd_emulator.cpp

@@ -865,6 +865,13 @@ pi_result piQueueFinish(pi_queue) {
   CONTINUE_NO_IMPLEMENTATION;
 }
 
+pi_result piQueueFlush(pi_queue) {
+  // No-op as enqueued commands with ESIMD_EMULATOR plugin are blocking
+  // ones that do not return until their completion - kernel execution
+  // and memory read.
+  CONTINUE_NO_IMPLEMENTATION;
+}
+
 pi_result piextQueueGetNativeHandle(pi_queue, pi_native_handle *) {
   DIE_NO_IMPLEMENTATION;
 }

sycl/source/handler.cpp

@@ -212,11 +212,12 @@ event handler::finalize() {
             backend::ext_intel_esimd_emulator) {
           // Dims==0 for 'single_task() - void(void) type'
           uint32_t Dims = (MArgs.size() > 0) ? MNDRDesc.Dims : 0;
-          return MQueue->getPlugin()
+          MQueue->getPlugin()
               .call<detail::PiApiKind::piEnqueueKernelLaunch>(
                   nullptr, reinterpret_cast<pi_kernel>(MHostKernel->getPtr()),
                   Dims, &MNDRDesc.GlobalOffset[0], &MNDRDesc.GlobalSize[0],
                   &MNDRDesc.LocalSize[0], 0, nullptr, nullptr);
+          return CL_SUCCESS;
         } else {
           return enqueueImpKernel(MQueue, MNDRDesc, MArgs, KernelBundleImpPtr,
                                   MKernel, MKernelName, MOSModuleHandle,