mb/google/rex: Add chip config for USB devices

+-------------+----------------+------------+
| USB 2.0     | Connector Type | OC Mapping |
+-------------+----------------+------------+
|      1      |       NC       |     NC     |
+-------------+----------------+------------+
|      2      |     Type-C     |    OC_0    |
+-------------+----------------+------------+
|      3      |       NC       |     NC     |
+-------------+----------------+------------+
|      4      |     Type-C     |     NA     |
+-------------+----------------+------------+
|      5      |      WWAN      |     NA     |
+-------------+----------------+------------+
|      6      |     Camera     |     NA     |
+-------------+----------------+------------+
|      7      |       NC       |     NC     |
+-------------+----------------+------------+
|      8      |       DCI      |     NA     |
+-------------+----------------+------------+
|      9      |     Type-A     |    OC_3    |
+-------------+----------------+------------+
|      10     |       BT       |     NA     |
+-------------+----------------+------------+

+---------------------+-------------------+------------+
| USB 3.2 Gen 2x1     | Connector Details | OC Mapping |
+---------------------+-------------------+------------+
|          1          |       Type-A      |    OC_3    |
+---------------------+-------------------+------------+
|          2          |        DCI        |     NA     |
+---------------------+-------------------+------------+

+------+-------------------+------------+
| TCPx | Connector Details | OC Mapping |
+------+-------------------+------------+
|   1  |   Type C port 0   |    OC_0    |
+------+-------------------+------------+
|   3  |   Type C port 1   |     NA     |
+------+-------------------+------------+

BUG=b:224325352
TEST=Able to build Google/Rex and boot to emulator.

Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: Iecab1318f683e3b53441cafe909bcfd978ee126b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65764
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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/rex0/overridetree.cb b/src/mainboard/google/rex/variants/rex0/overridetree.cb
index e0cbc6e..65c1c81 100644
--- a/src/mainboard/google/rex/variants/rex0/overridetree.cb
+++ b/src/mainboard/google/rex/variants/rex0/overridetree.cb
@@ -1,5 +1,18 @@
 chip soc/intel/meteorlake
 
+	register "usb2_ports[1]" = "USB2_PORT_TYPE_C(OC0)"	# USB2_C0
+	register "usb2_ports[3]" = "USB2_PORT_TYPE_C(OC_SKIP)"	# USB2_C1
+	register "usb2_ports[4]" = "USB2_PORT_MID(OC_SKIP)"	# M.2 WWAN
+	register "usb2_ports[5]" = "USB2_PORT_MID(OC_SKIP)"	# M.2 Camera
+	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(OC_SKIP)"	# DCI
+
+	register "tcss_ports[0]" = "TCSS_PORT_DEFAULT(OC0)"
+	register "tcss_ports[2]" = "TCSS_PORT_DEFAULT(OC_SKIP)"
+
 	register "serial_io_gspi_mode" = "{
 		[PchSerialIoIndexGSPI0] = PchSerialIoDisabled,
 		[PchSerialIoIndexGSPI1] = PchSerialIoPci,