soc/apollolake/acpi: Fill ACPI HPET table

HPET table is required to report integrated HPET timer to kernel.
Without HPET table added,Linux kernel will panic when loading timer
driver.

Change-Id: I7368bc29f4e03d5882dcfc4a770fa7bfbc6c26a0
Signed-off-by: Zhao, Lijian <lijian.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/13374
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

src/soc/intel/apollolake/acpi.c

@@ -113,3 +113,10 @@ void soc_fill_common_fadt(acpi_fadt_t * fadt)
 
 	fadt->x_gpe1_blk.space_id = 1;
 }
+
+unsigned long southbridge_write_acpi_tables(device_t device,
+		unsigned long current,
+		struct acpi_rsdp *rsdp)
+{
+	return acpi_write_hpet(device, current, rsdp);
+}

src/soc/intel/apollolake/include/soc/acpi.h

@@ -17,4 +17,7 @@
 
 void soc_fill_common_fadt(acpi_fadt_t * fadt);
 
+unsigned long southbridge_write_acpi_tables(device_t device,
+                unsigned long current, struct acpi_rsdp *rsdp);
+
 #endif	/* _SOC_APOLLOLAKE_ACPI_H_ */

src/soc/intel/apollolake/lpc.c

@@ -13,6 +13,7 @@
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_ids.h>
+#include <soc/acpi.h>
 #include <soc/pci_ids.h>
 
 static void soc_lpc_add_io_resources(device_t dev)
@@ -39,6 +40,7 @@ static struct device_operations device_ops = {
 	.read_resources = &soc_lpc_read_resources,
 	.set_resources = &pci_dev_set_resources,
 	.enable_resources = &pci_dev_enable_resources,
+	.write_acpi_tables = southbridge_write_acpi_tables,
 };
 
 static const struct pci_driver soc_lpc __pci_driver = {