[patch] avoid printf format warning in debugging path

[Jonathan A. Kollasch]

Use %p instead of %x to print void *.

Signed-off-by: Jonathan Kollasch 
Acked-by: Jonathan Kollasch 
---

[Myles Watson]

> Subject: [coreboot] [patch] avoid printf format warning in debugging path
>
> Use %p instead of %x to print void *.

I didn't see the patch for this one or the previous one.

Thanks,
Myles