Attempts to see the usb devices

This attempts to list the devices that can be flashed to in order to determine
what the probe should be.

Change-Id: Ied8162e3b1372c51afb346fd3aa2ada6ca0ed519
Signed-off-by: Matthew Dalzell <matthew.dalzell@arm.com>
diff --git a/build_helper/build_helper_configs.py b/build_helper/build_helper_configs.py
index 72c30a1..d14669c 100755
--- a/build_helper/build_helper_configs.py
+++ b/build_helper/build_helper_configs.py
@@ -142,7 +142,9 @@
                                           "image_signing/scripts/tfm_ns_signed.bin ;"
                                           "popd"),
                    "nxp/lpcxpresso55s69": ("echo 'LPCXpresso55S69 board post process\n'; "
-                                           "pip3 install libusb;"   # this should not go here, remove after test
+                                           "pip3 install libusb; "   # this should not go here, remove after test
+                                           "pyocd list; "
+                                           "lsusb -v; "
                                            "pyocd erase --mass -t lpc55s69 --no-wait; "
                                            "if [ -f \"%(ci_build_root_dir)s/spe/bin/bl2.hex\" ]; then "
                                            "pyocd flash %(ci_build_root_dir)s/spe/bin/bl2.hex -t lpc55s69 --no-wait; "