mb/google/rex/var/screebo: Add BT devicetree config

Enabling BT for screebo project

BUG=b:278169273
TEST=Check whether BT can connect to Bluetooth device

Signed-off-by: qinwentao <qinwentao@huaqin.corp-partner.google.com>
Change-Id: I0ecd62abfbe751e1036948b1490844e7e63d7f0d
Signed-off-by: qinwentao <qinwentao@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75352
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kun Liu <liukun11@huaqin.corp-partner.google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
diff --git a/src/mainboard/google/rex/variants/screebo/overridetree.cb b/src/mainboard/google/rex/variants/screebo/overridetree.cb
index 2e7b208..ee59f6a 100644
--- a/src/mainboard/google/rex/variants/screebo/overridetree.cb
+++ b/src/mainboard/google/rex/variants/screebo/overridetree.cb
@@ -4,6 +4,7 @@
 	register "usb2_ports[1]" = "USB2_PORT_TYPE_C(OC0)"	# USB2_C0
 	register "usb2_ports[2]" = "USB2_PORT_MID(OC2)"	# Type-A Port A1
 	register "usb2_ports[8]" = "USB2_PORT_MID(OC3)"	# Type-A Port A0
+	register "usb2_ports[9]" = "USB2_PORT_MID(OC_SKIP)"	# M.2 Bluetooth
 
 	register "usb3_ports[0]" = "USB3_PORT_DEFAULT(OC3)"	# USB3/2 Type A port A0
 	register "usb3_ports[1]" = "USB3_PORT_DEFAULT(OC2)"	# USB3/2 Type A port A1
@@ -288,6 +289,12 @@
 						device ref usb2_port9 on end
 					end
 					chip drivers/usb/acpi
+						register "desc" = ""USB2 Bluetooth""
+						register "type" = "UPC_TYPE_INTERNAL"
+						register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_B01)"
+						device ref usb2_port10 on end
+					end
+					chip drivers/usb/acpi
 						register "desc" = ""USB3 Type-A Port A0 (MLB)""
 						register "type" = "UPC_TYPE_USB3_A"
 						register "use_custom_pld" = "true"