thermal: intel: intel_pch_thermal: Add Cannon Lake Low Power PCH support

Add LP (Low Power) PCH id for Cannon Lake (CNL) based platforms.

Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@intel.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/1596097503-27924-1-git-send-email-sumeet.r.pawnikar@intel.com

drivers/thermal/intel/intel_pch_thermal.c

@@ -24,6 +24,7 @@
 #define PCH_THERMAL_DID_SKL_H	0xA131 /* Skylake PCH 100 series */
 #define PCH_THERMAL_DID_CNL	0x9Df9 /* CNL PCH */
 #define PCH_THERMAL_DID_CNL_H	0xA379 /* CNL-H PCH */
+#define PCH_THERMAL_DID_CNL_LP	0x02F9 /* CNL-LP PCH */
 #define PCH_THERMAL_DID_CML_H	0X06F9 /* CML-H PCH */
 
 /* Wildcat Point-LP  PCH Thermal registers */
@@ -410,6 +411,8 @@ static const struct pci_device_id intel_pch_thermal_id[] = {
 		.driver_data = board_cnl, },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_CNL_H),
 		.driver_data = board_cnl, },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_CNL_LP),
+		.driver_data = board_cnl, },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_CML_H),
 		.driver_data = board_cml, },
 	{ 0, },