mb/google/volteer/variants/drobit: Configure USB2 port for Type-C

USB2 ports assigned to type-C connector need to be configured properly
by the USB2_PORT_TYPE_C. and also modify the description of USB port.

BUG=b:177480902
BRANCH=firmware-volteer-13672.B
TEST=emerge-volteer coreboot chromeos-bootimage
     build Pass
     And check the typeC port function is normal by manual.

Signed-off-by: Wayne3_Wang <Wayne3_Wang@pegatron.corp-partner.google.com>
Change-Id: I9e962f8cd76e1986700821168594c50bc21553e9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50217
Reviewed-by: Wayne3 Wang <wayne3_wang@pegatron.corp-partner.google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/volteer/variants/drobit/overridetree.cb b/src/mainboard/google/volteer/variants/drobit/overridetree.cb
index 17143b8..608535e 100644
--- a/src/mainboard/google/volteer/variants/drobit/overridetree.cb
+++ b/src/mainboard/google/volteer/variants/drobit/overridetree.cb
@@ -21,6 +21,9 @@
 		.tdp_pl4 = 105,
 	}"
 
+	register "usb2_ports[3]" = "USB2_PORT_TYPE_C(OC0)"     # Type-C port 1
+	register "usb2_ports[8]" = "USB2_PORT_TYPE_C(OC3)"     # Type-C port 0
+
 	#+-------------------+---------------------------+
 	#| Field             |  Value                    |
 	#+-------------------+---------------------------+
@@ -178,7 +181,7 @@
 						device ref tcss_usb3_port1 on end
 					end
 					chip drivers/usb/acpi
-						register "desc" = ""USB3 Type-C Port C1 (DB)""
+						register "desc" = ""USB3 Type-C Port C1 (MLB)""
 						register "type" = "UPC_TYPE_C_USB2_SS_SWITCH"
 						register "group" = "ACPI_PLD_GROUP(2, 2)"
 						device ref tcss_usb3_port2 on
@@ -192,13 +195,13 @@
 			chip drivers/usb/acpi
 				device ref xhci_root_hub on
 					chip drivers/usb/acpi
-						register "desc" = ""USB2 Type-A Port A0 (MLB)""
+						register "desc" = ""USB2 Type-A Port A0 (DB)""
 						register "type" = "UPC_TYPE_A"
 						register "group" = "ACPI_PLD_GROUP(1, 1)"
 						device ref usb2_port1 on end
 					end
 					chip drivers/usb/acpi
-						register "desc" = ""USB2 Type-C Port C1 (DB)""
+						register "desc" = ""USB2 Type-C Port C1 (MLB)""
 						register "type" = "UPC_TYPE_C_USB2_SS_SWITCH"
 						register "group" = "ACPI_PLD_GROUP(2, 1)"
 						device ref usb2_port4 on
@@ -223,7 +226,7 @@
 						device ref usb2_port10 on end
 					end
 					chip drivers/usb/acpi
-						register "desc" = ""USB3 Type-A Port A0 (MLB)""
+						register "desc" = ""USB3 Type-A Port A0 (DB)""
 						register "type" = "UPC_TYPE_USB3_A"
 						register "group" = "ACPI_PLD_GROUP(1, 2)"
 						device ref usb3_port1 on end