tools/power turbostat: SGX state should print only if --debug

BugLink: http://bugs.launchpad.net/bugs/1591802



The CPUID.SGX bit was printed, even if --debug was used

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
(cherry picked from commit 8ae72255)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Brad Figg <brad.figg@canonical.com>
Acked-by: Kamal Mostafa <kamal@canonical.com>