powerpc: Remove SMP warning from PowerMac cpufreq

On Thu, Aug 13, 2009 at 04:14:58PM +1000, Benjamin Herrenschmidt wrote:
> On Tue, 2009-08-11 at 11:39 +0200, Bastian Blank wrote:
> > This patch just disables this driver on SMP kernels, as it is obviously
> > not supported.
> Why not remove the #error instead ? :-) I don't think it's still
> meaningful, especially since we use the timebase for delays nowadays
> which doesn't depend on the CPU frequency...

Your call. Take this one:

The build of a PowerMac 32bit kernel currently fails with

error: #warning "WARNING, CPUFREQ not recommended on SMP kernels"

Thie patch removes the not longer applicable SMP warning from the
PowerMac cpufreq code.

Signed-off-by: Bastian Blank <waldi@debian.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>