Add support for scanning dual-channel devices#6
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This PR adds support to the scanning code for dual-channel devices. It's now smart enough to detect each SCB of dual-channel devs as a device that can be opened. It should be able to handle all possible combinations of SCB 0 and 1 descriptors, at least for modes that cy-serial-bridge supports operating in.
With this PR merged, it should now be possible to open and use each channel of a dual channel device as desired. However, I have not started on reconfiguring such devices, as I suspect this may require significant reverse engineering of their control block format and/or the USB requests to access it (they only have one manufacturer interface, not one for each port, so not quite sure how that works).
This PR was made possible via @runger1101001 graciously sending me a CY7C65215 board to test with!