alpha: Enable the rpcc clocksource for single processor
alpha: Enable the rpcc clocksource for single processor

Don't depend on SMP, just check the number of processors online.
This allows a single distribution kernel to use the clocksource
when run on a single processor machine.  Do depend on whether or
not we're using WTINT.

Signed-off-by: Richard Henderson <aea4fd857e97ee7d33f60175ba9388a955b9d916@twiddle.net>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs