Allow user to force TSC as stable clock-source.
Works around BIOS issues in the FWA-7304 (Via CN700 chipset)
system, and possibly others.

This is against 2.6.29-rc3.

Signed-Off-By:  Ben Greear<greearb@candelatech.com>

-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com