wsl/hsakmt: implement ipc signal

IPC Signal only support sys ram backend and CPU&GPU both accessible,
IPC Memory only support vram backend and only GPU accessible.

Reviewed-by: Flora Cui <flora.cui@amd.com>
Signed-off-by: tiancyin <tianci.yin@amd.com>

libhsakmt.h

@@ -202,6 +202,6 @@ uint32_t get_vgpr_size_per_cu(HSA_ENGINE_ID id);
 
 HSAKMT_STATUS hsaKmtImportDMABufHandle(int DMABufFd,
 				       HsaGraphicsResourceInfo *GraphicsResourceInfo,
-				       bool requiresVAddr = false);
+				       HSA_REGISTER_MEM_FLAGS RegisterFlags = {0});
 
 #endif