tools/lib/misctxrx.c (wait_for_interrupt): don't fragment timeouts
tools/lib/misctxrx.c (wait_for_interrupt): don't fragment timeouts

usb_bulk_read may lose data when timing out. We therefore try to
minimize the number of times we time out.

cfriedt/ben-wpan,cfriedt/ben-wpan,cfriedt/ben-wpan,cfriedt/ben-wpan,cfriedt/ben-wpan,cfriedt/ben-wpan