Sets the virtual device subtype.
PRL_RESULT PrlVmDev_SetSubType( PRL_HANDLE hVmDev, PRL_CLUSTERED_DEVICE_SUBTYPE nSubType );
PrlApiVm.h
PRL_RESULT. Possible values:
PRL_ERR_INVALID_ARG - invalid handle was passed.
PRL_ERR_SUCCESS - function completed successfully.