Bluetooth: hci_sync: Reset device counters in hci_dev_close_sync()

Before resetting or closing the device, protocol counters should also be
zeroed.

Fixes: d0b137062b2d ("Bluetooth: hci_sync: Rework init stages")
Signed-off-by: Heitor Alves de Siqueira <halves@igalia.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>