thermal/powerclamp: add id for braswell cpu

Braswell also has package C-states which can be used for idle
injection. This patch adds Braswell CPU ID in intel powerclamp
driver.

Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
diff --git a/drivers/thermal/intel_powerclamp.c b/drivers/thermal/intel_powerclamp.c
index 95cb7fc..b46c706 100644
--- a/drivers/thermal/intel_powerclamp.c
+++ b/drivers/thermal/intel_powerclamp.c
@@ -689,6 +689,7 @@
 	{ X86_VENDOR_INTEL, 6, 0x3f},
 	{ X86_VENDOR_INTEL, 6, 0x45},
 	{ X86_VENDOR_INTEL, 6, 0x46},
+	{ X86_VENDOR_INTEL, 6, 0x4c},
 	{}
 };
 MODULE_DEVICE_TABLE(x86cpu, intel_powerclamp_ids);