USB: cxacru: Use a bulk/int URB to access the command endpoint

USB: cxacru: Use a bulk/int URB to access the command endpoint

commit 902ffc3c707c1d459ea57428a619a807cbe412f9 upstream.

The command endpoint is either a bulk or interrupt endpoint, but using
the wrong type of transfer causes an error if CONFIG_USB_DEBUG is
enabled after commit f661c6f8c67bd55e93348f160d590ff9edf08904, which
checks for this mismatch.

Detect which type of endpoint it is and use a bulk/int URB as
appropriate. There are other function calls specifying a bulk pipe,
but usb_clear_halt doesn't use the pipe type (only the endpoint) and
usb_bulk_msg auto-detects interrupt transfers.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>