bebob: Send a cue to load firmware for M-Audio Firewire series

This commit is optional. The purpose of this commit is to help testers.

Just powering on, these devices below wait to download firmware.
 - Firewire Audiophile
 - Firewire 410
 - Firewire 1814
 - ProjectMix I/O

But firmware version 5058 or later, flash memory in the device store it. So
this driver can tell the device to load the firmware by sending a certain cue.

I think this functionality should be implemented in user-land.