[WDF] Add Windows Driver Framework files

Takern from Microsoft GitHub repo:
d9c6040fe9

Licensed under MIT

sdk/lib/drivers/wdf/shared/irphandlers/pnp/um/powerstatemachineum.cpp

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+/*++
+Copyright (c) Microsoft. All rights reserved.
+
+Module Name:
+
+    PowerStateMachineUm.cpp
+
+Abstract:
+
+    This module implements the Power state machine for the driver framework.
+    This code was split out from FxPkgPnp.cpp.
+
+Author:
+
+
+
+
+
+Environment:
+
+    User mode only
+
+Revision History:
+
+--*/
+
+#include "..\pnppriv.hpp"
+
+extern "C" {
+#if defined(EVENT_TRACING)
+#include "PowerStateMachineUm.tmh"
+#endif
+}
+
+_Must_inspect_result_
+BOOLEAN
+FxPkgPnp::PowerDmaPowerUp(
+    VOID
+    )
+/*++
+
+Routine Description:
+    Calls FxDmaEnabler::PowerUp on all registered FxDmaEnabler objects.  As soon
+    as a PowerUp call fails, we stop iterating over the list.
+
+Arguments:
+    None
+
+Return Value:
+    TRUE if PowerUp succeeded on all enablers, FALSE otherwise
+
+  --*/
+
+{
+    return TRUE;
+}
+
+BOOLEAN
+FxPkgPnp::PowerDmaPowerDown(
+    VOID
+    )
+/*++
+
+Routine Description:
+    Calls FxDmaEnabler::PowerDown on all registered FxDmaEnabler objects.  All
+    errors are accumulated, all enablers will be PowerDown'ed.
+
+Arguments:
+    None
+
+Return Value:
+    TRUE if PowerDown succeeded on all enablers, FALSE otherwise
+
+  --*/
+{
+    return TRUE;
+}
+
+VOID
+FxPkgPnp::_PowerSetSystemWakeSource(
+    __in FxIrp* Irp
+    )
+/*++
+
+Routine Description:
+    Set source of wake if OS supports this.
+
+Arguments:
+    Irp
+
+Return Value:
+    None
+
+  --*/
+{
+    UNREFERENCED_PARAMETER(Irp);
+
+
+
+
+    DO_NOTHING();
+}
+