intel_pstate: Add SKY-S support

Whitelist the SKL-S processor

Signed-off-by: Kristen Carlson Accardi <kristen@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index b9354b6..f05f063 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -908,6 +908,7 @@
 	ICPU(0x4c, byt_params),
 	ICPU(0x4e, core_params),
 	ICPU(0x4f, core_params),
+	ICPU(0x5e, core_params),
 	ICPU(0x56, core_params),
 	ICPU(0x57, knl_params),
 	{}