misc: configurator: Config usb mediator devices in dropdown list

Support detecting connected usb devices in board_inspector and list them
in the usb mediator configuration menu.

Tracked-On: #7424
Signed-off-by: Calvin Zhang <calvinzhang.cool@gmail.com>

misc/config_tools/board_inspector/extractors/95-usb.py

@@ -0,0 +1,33 @@
+# Copyright (C) 2022 Intel Corporation. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+import os, re
+
+from extractors.helpers import add_child, get_node
+
+USB_DEVICES_PATH = "/sys/bus/usb/devices"
+USB_DEVICES_REGEX = r"^\d-\d$"   # only devices connecting to root hub
+
+def extract(args, board_etree):
+    dev_regex = re.compile(USB_DEVICES_REGEX)
+    for dev in os.listdir(USB_DEVICES_PATH):
+        m = dev_regex.match(dev)
+        if m:
+            d = m.group(0)
+            devpath = os.path.join(USB_DEVICES_PATH, d)
+            with open(os.path.join(devpath, 'devnum'), 'r') as f:
+                devnum = f.read().strip()
+            with open(os.path.join(devpath, 'busnum'), 'r') as f:
+                busnum = f.read().strip()
+            cmd_out = os.popen('lsusb -s {b}:{d}'.format(b=busnum, d=devnum)).read()
+            desc = cmd_out.split(':', maxsplit=1)[1].strip('\n')
+
+            with open(devpath + '/port/firmware_node/path') as f:
+                acpi_path = f.read().strip()
+            usb_port_node = get_node(board_etree, f"//device[acpi_object='{acpi_path}']")
+            if usb_port_node is not None:
+                add_child(usb_port_node, "usb_device", location=d,
+                        description=d + desc)
+