bluetooth: hci: refactored bluetooth hci packet type indicators

Introduced a unified definition for HCI packet type indicators in
'bluetooth/hci_types.h. This change streamlines the code in
'drivers/bluetooth/hci/', reducing redundancy.
Enhances maintainability and consistency across all HCI drivers.

Signed-off-by: Pisit Sawangvonganan <pisit@ndrsolution.com>