intel powerclamp: support Knights Landing

This patch enables intel_powerclamp driver to run on the
next-generation Intel(R) Xeon Phi Microarchitecture
code named "Knights Landing"

Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Acked-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>