mb/google/zork/morphius: Drop touchscreen detection

Morphius boards using pre-v3.6 schematics don't have a dedicated GPIO
for touchscreen power/enable, and so fail with runtime detection
enabled. Since it only has one touchscreen option, and no SKUs lack a
touchscreen, we can safely assume it is present in all cases.

TEST=build/boot morphius w/4k screen, verify touchscreen enabled in
cbmem and functional in Linux and Windows.

Change-Id: I13e07e14b5a18fa1dd3b18950cf46e9d7821eedc
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78404
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
diff --git a/src/mainboard/google/zork/variants/morphius/overridetree.cb b/src/mainboard/google/zork/variants/morphius/overridetree.cb
index 9c07a40..2e4595e 100644
--- a/src/mainboard/google/zork/variants/morphius/overridetree.cb
+++ b/src/mainboard/google/zork/variants/morphius/overridetree.cb
@@ -120,7 +120,6 @@
 			register "generic.hid" = ""GDIX0000""
 			register "generic.desc" = ""Goodix Touchscreen""
 			register "generic.irq_gpio" = "ACPI_GPIO_IRQ_LEVEL_LOW(GPIO_12)"
-			register "generic.detect" = "1"
 			register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_90)"
 			register "generic.enable_delay_ms" = "10"
 			register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPIO_140)"