Use default max for pstate driver

Currently number of possible states are estimated based on
MSR to get max turbo and non turbo states. If there is
no MSR access, use default 10 states (10%/state).

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Ver 0.8

Refer to README.txt for details.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>