mb/lenovo/t520: Add USB port config into devicetree

Devicetree for lenovo/520 is missing USB ports config, hence they
don't work. This change introduces USB port config.
Tests performed:
- Can select a boot media using a USB keyboard from any port.
- Can boot from each port except usb@1:1.1.
- Measured read speed from a thumb drive on each port 24.5-28.9 MiB/s.

Change-Id: I96dba153a563e0e290b96b837fdca39d7598ef17
Signed-off-by: PuFF1k <exopuf@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83764
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>

src/mainboard/lenovo/t520/devicetree.cb

@@ -58,6 +58,24 @@ chip northbridge/intel/sandybridge
 			register "spi_uvscc" = "0x2005"
 			register "spi_lvscc" = "0x2005"
 
+			# OC3 set in BIOS to port 2-7, OC7 set in BIOS to port 10-13
+			register "usb_port_config" = "{
+				{1, 1,  0}, /* P0: system port 4, OC0 */
+				{1, 1,  1}, /* P1: system port 2 (EHCI debug), OC 1 */
+				{1, 1, -1}, /* P2: HALF MINICARD (WLAN) no oc */
+				{1, 0, -1}, /* P3: WWAN, no OC */
+				{1, 0, -1}, /* P4: smartcard, no OC */
+				{1, 1, -1}, /* P5: ExpressCard, no OC */
+				{0, 0, -1}, /* P6: empty */
+				{0, 0, -1}, /* P7: empty */
+				{1, 1,  4}, /* P8: system port 3, OC4*/
+				{1, 1,  5}, /* P9: system port 1 (EHCI debug), OC 5 */
+				{1, 0, -1}, /* P10: fingerprint reader, no OC */
+				{1, 0, -1}, /* P11: bluetooth, no OC. */
+				{1, 1, -1}, /* P12: docking, no OC */
+				{1, 1, -1}  /* P13: camera (LCD), no OC */
+			}"
+
 			device ref mei1 on end
 			device ref mei2 off end
 			device ref me_ide_r off end