[S] Change in coreboot[master]: mb/google/myst: Enable tis_plat_irq_status

[Jon Murphy (Code Review)]

Jon Murphy has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/74286 )

Change subject: mb/google/myst: Enable tis_plat_irq_status
......................................................................

mb/google/myst: Enable tis_plat_irq_status

This will fix:
> [INFO ]  Probing TPM I2C: tis_plat_irq_status() not implemented, wasting 20ms to wait on Cr50!

BUG=b:277297687
TEST=builds

Change-Id: I611a2855d94167748d0f82a478687fe2cdf5846a
---
M src/mainboard/google/myst/variants/baseboard/Makefile.inc
A src/mainboard/google/myst/variants/baseboard/tpm_tis.c
2 files changed, 28 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/86/74286/1

diff --git a/src/mainboard/google/myst/variants/baseboard/Makefile.inc b/src/mainboard/google/myst/variants/baseboard/Makefile.inc
index 40a41df..ffa462a 100644
--- a/src/mainboard/google/myst/variants/baseboard/Makefile.inc
+++ b/src/mainboard/google/myst/variants/baseboard/Makefile.inc
@@ -1,7 +1,11 @@
 bootblock-y += gpio.c

ramstage-y += gpio.c
+ramstage-y += tpm_tis.c

romstage-y += gpio.c
+romstage-y += tpm_tis.c
+
+verstage-y += tpm_tis.c

smm-y += smihandler.c
diff --git a/src/mainboard/google/myst/variants/baseboard/tpm_tis.c b/src/mainboard/google/myst/variants/baseboard/tpm_tis.c
new file mode 100644
index 0000000..42accfa
--- /dev/null
+++ b/src/mainboard/google/myst/variants/baseboard/tpm_tis.c
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <security/tpm/tis.h>
+#include <soc/gpio.h>
+
+int tis_plat_irq_status(void)
+{
+	return gpio_interrupt_status(GPIO_84);
+}