intel_idle: support additional Broadwell model

Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index 9cceacb..1bc0c170 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -727,6 +727,7 @@
 	ICPU(0x46, idle_cpu_hsw),
 	ICPU(0x4d, idle_cpu_avn),
 	ICPU(0x3d, idle_cpu_bdw),
+	ICPU(0x47, idle_cpu_bdw),
 	ICPU(0x4f, idle_cpu_bdw),
 	ICPU(0x56, idle_cpu_bdw),
 	{}