intel_idle: Add KBL support

BugLink: http://bugs.launchpad.net/bugs/1672439

From: Len Brown <len.brown@intel.com>

KBL is similar to SKL
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
(cherry picked from commit 3ce093d4)
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Brad Figg <brad.figg@canonical.com>
Signed-off-by: Brad Figg <brad.figg@canonical.com>

drivers/idle/intel_idle.c

@@ -1011,6 +1011,8 @@ static const struct x86_cpu_id intel_idle_ids[] __initconst = {
 	ICPU(0x56, idle_cpu_bdw),
 	ICPU(0x4e, idle_cpu_skl),
 	ICPU(0x5e, idle_cpu_skl),
+	ICPU(0x8e, idle_cpu_skl),
+	ICPU(0x9e, idle_cpu_skl),
 	ICPU(0x57, idle_cpu_knl),
 	ICPU(0x5c, idle_cpu_bxt),
 	{}