Bluetooth: Move Extended Inquiry Response defines to hci.h

The EIR defines are needed also outside of mgmt.c (e.g. in hci_event.c
to check if EIR data has the complete name) so it's better to have them
in a single public place, i.e. hci.h.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>