Bluetooth: Fix HCIGETDEVINFO regression

Recent changes breaks HCIGETDEVINFO since it changes the size of
hci_dev_info.

Fixes: 26afbd82

 ("Bluetooth: Add initial implementation of CIS connections")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>