imx_usb: Support hotplug of device

[panicking]

Add a way to wait until a device is plugged in the usb and match
the list

Signed-off-by: Michael Trimarchi [email protected]

[panicking]

@otavio is this project maintained?

[otavio]

@gibsson ☝🏼

[gibsson]

No this project is indeed no longer maintained as NXP provides a better solution:
https://github.com/NXPmicro/mfgtools
I'll check with Troy if we integrate that patch and come back to you next week (vacation time right now).

[panicking]

@gibsson I know the other tool but what about SPL + UBOOT.IMG loading. uuu seems not working for me for imx6ull

[gibsson]

I don't know about 6ull but I doubt it can't do it as SPL + U-Boot is working fine for i.MX8 processors.
My suggestion is to fix mfgtools to support it for 6ull if it doesn't support it. It is supported to load anything from SPL as long as the board USB PID/VID is listed properly in config.cpp:
https://github.com/NXPmicro/mfgtools/blob/master/libuuu/config.cpp

[panicking]

@gibsson can you merge or not?