[PATCH] Don't access HID registers if running on a Hypervisor.

[Benjamin Herrenschmidt]

On Thu, 2006-06-22 at 06:58 -0400, Jimi Xenidis wrote:

> 970s consider this a no-op (I believe an expensive one) especially  
> when you consider some of the synchronization issues around the mtspr  
> HIDx.
> And though this is 970 specific code, Cell and future processors,  
> will no longer allow writing to to these registers if !(MSR[0]=1 &&  
> MSR[PR]=0)

Fair enough, let's fix it.

Ben.