This patch introduces a quirk flag for sending the HCI_Reset command. In
general the HCI_Reset is not needed, but some Broadcom dongles uses this
reset command to switch from HID to HCI mode. And it is not safe to send
the HCI_Reset to every Bluetooth device, because the CSR firmware prior
HCI 12.x will reset the host transport and this is wrong according to the
Bluetooth specification.