Bluetooth: Host: Add the API bt_hci_err_to_str()

This API converts a HCI error code to a string.
This can be useful if application developers want to print them
in the applications.

Later we can also use them in the host to improve debuggability.

Signed-off-by: Rubin Gerritsen <rubin.gerritsen@nordicsemi.no>
6 files changed