Sets EFI boot for the virtual machine.
PRL_RESULT PrlVmCfg_SetEfiEnabled( PRL_HANDLE hVmCfg, PRL_BOOL bEfiEnabled );
PrlApiVm.h
PRL_RESULT. Possible values:
PRL_ERR_INVALID_ARG - invalid PHT_VIRTUAL_MACHINE handle or NULL pointer to the output buffer was specified.
PRL_ERR_SUCCESS - operation completed successfully
for the specified virtual machine.