[U-Boot] [U-Boot, v9, 15/18] efi: sandbox: Tidy up copy_fdt() to work with sandbox

[Alexander Graf]

> At present this function takes a pointer as its argument, then passes this
> to efi_allocate_pages(), which actually takes an address. It uses casts,
> which are not supported on sandbox.
> 
> Also the function calculates the FDT size rounded up to the neared EFI
> page size, then its caller recalculates the size and adds a bit more to
> it.
> 
> This function is much better written as something that works with
> addresses only, and returns both the address and the size of the relocated
> FDT.
> 
> Also, copy_fdt() returns NULL on error, but really should propagate the
> error from efi_allocate_pages(). To do this it needs to return an
> efi_status_t, not a void *.
> 
> Update the code in this way, so that it is easier to follow, and also
> supports sandbox.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>

Thanks, applied to efi-next

Alex