mainboard/google/zoombini: add EC to ACPI tables

this adds missing ACPI entries for the EC, CPU, and power button.
also, the EC to AP wakeup pin assignment is fixed.

BUG=b:71819257
BRANCH=chromeos-2016.05
TEST=booted on meowth.  /sys/class/power_supply now gets populated.

Change-Id: I0d091bdf25f9a806bd36329d1f17ac34b3115e48
Signed-off-by: Caveh Jalali <caveh@chromium.org>
Reviewed-on: https://review.coreboot.org/23237
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>

src/mainboard/google/zoombini/dsdt.asl

@@ -15,6 +15,9 @@
  * GNU General Public License for more details.
  */
 
+#include "variant/ec.h"
+#include "variant/gpio.h"
+
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
@@ -30,7 +33,14 @@ DefinitionBlock(
 	// global NVS and variables
 	#include <soc/intel/cannonlake/acpi/globalnvs.asl>
 
+	// CPU
+	#include <soc/intel/cannonlake/acpi/cpu.asl>
+
 	Scope (\_SB) {
+		Device (PWRB)
+		{
+			Name (_HID, EisaId ("PNP0C0C"))
+		}
 		Device (PCI0)
 		{
 			#include <soc/intel/cannonlake/acpi/northbridge.asl>
@@ -45,4 +55,13 @@ DefinitionBlock(
 
 	// Chipset specific sleep states
 	#include <soc/intel/cannonlake/acpi/sleepstates.asl>
+
+	/* Chrome OS Embedded Controller */
+	Scope (\_SB.PCI0.LPCB)
+	{
+		/* ACPI code for EC SuperIO functions */
+		#include <ec/google/chromeec/acpi/superio.asl>
+		/* ACPI code for EC functions */
+		#include <ec/google/chromeec/acpi/ec.asl>
+	}
 }

src/mainboard/google/zoombini/variants/baseboard/include/baseboard/gpio.h

@@ -32,7 +32,7 @@
 #define GPIO_PCH_WP		GPP_A1
 
 /* EC wake is LAN_WAKE# which is a special DeepSX wake pin */
-#define GPE_EC_WAKE		GPP_74
+#define GPE_EC_WAKE		GPE0_LAN_WAK
 
 /* eSPI virtual wire reporting */
 #define EC_SCI_GPI		GPE0_ESPI