mb/google/nissa/var/quandiso: Add stop pin for G2 touchscreen

Add stop pin control for G2 touchscreen refer to
G7500_Datasheet_Ver.1.2.

BUG=b:335803573
TEST=build and verified touchscreen works normally

Change-Id: I4f085c67c0cdb8b9ca3ff03993fda69cca6319ef
Signed-off-by: Robert Chen <robert.chen@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82254
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/brya/variants/quandiso/overridetree.cb b/src/mainboard/google/brya/variants/quandiso/overridetree.cb
index 21c9aba..bebc927 100644
--- a/src/mainboard/google/brya/variants/quandiso/overridetree.cb
+++ b/src/mainboard/google/brya/variants/quandiso/overridetree.cb
@@ -264,6 +264,9 @@
 				register "generic.detect" = "1"
 				register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C1)"
 				register "generic.reset_delay_ms" = "50"
+				register "generic.stop_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C6)"
+				register "generic.stop_delay_ms" = "55"
+				register "generic.stop_off_delay_ms" = "5"
 				register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_C0)"
 				register "generic.enable_delay_ms" = "1"
 				register "generic.has_power_resource" = "1"