mb/google/hatch: Kohaku: Add MKBP to suspend wake events

This CL allows MKBP events from the EC to wake the system from suspend
states.

BUG=b:144122000
BRANCH=firmware-hatch-12672.B
TEST=Verify that MKBP events generated from EC will wake the system
from S0ix.

Change-Id: I8a0d2c7ed89fa1ea937a08c3082cc5d3e782efff
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38496
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/mainboard/google/hatch/variants/kohaku/gpio.c

@@ -45,6 +45,8 @@ static const struct pad_config gpio_table[] = {
 	PAD_CFG_GPI_APIC(GPP_C7, NONE, PLTRST, LEVEL, INVERT),
 	/* C12 : EN_PP3300_TSP_DX */
 	PAD_CFG_GPO(GPP_C12, 0, DEEP),
+	/* C13 : EC_PCH_INT_L - needs to wake the system */
+	PAD_CFG_GPI_IRQ_WAKE(GPP_C13, NONE, PLTRST, LEVEL, INVERT),
 	/* C15 : EN_PP3300_DIG_DX */
 	PAD_CFG_GPO(GPP_C15, 0, DEEP),
 	/* C23 : UART2_CTS# ==> NC */

src/mainboard/google/hatch/variants/kohaku/include/variant/ec.h

@@ -20,4 +20,12 @@
 
 #define EC_ENABLE_MULTIPLE_DPTF_PROFILES
 
-#endif
+#undef MAINBOARD_EC_S3_WAKE_EVENTS
+
+#define MAINBOARD_EC_S3_WAKE_EVENTS \
+	(MAINBOARD_EC_S5_WAKE_EVENTS |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEY_PRESSED) |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_MKBP)        |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_MODE_CHANGE))
+
+#endif /* VARIANT_EC_H */