[U-Boot] [U-Boot, 2/2] efi_loader: check CreateEvent() parameters

[Alexander Graf]

> Add some of the invalid parameter checks described in the UEFI
> specification for CreateEvent().  This does not include checking
> the validity of the type and tpl parameters.
> 
> Signed-off-by: Jonathan Gray <jsg at jsg.id.au>
> Acked-By: Heinrich Schuchardt <xypron.glpk at gmx.de>

Thanks, applied to efi-next

Alex