Add license identifier to files which Arm owns the copyright to,
and contain either BSD-3 or Apache-2.0 licenses. This is to address
license errors raised by scancode analysis.
Update parameters passed to onDataSent, onUpdatesEnabled/Disabled, and onConfirmationReceived callbacks.
Deprecate single-callback-registering functions for event handling in lieu of the new EventHandler-based API.
Introduce new GattServer::EventHandler callback functions to replace the deprecated versions.
The ChainableGapEventHandler enables chaining together Gap::EventHandlers so separate parts of an application can be notified of Gap events as needed. The application can register multiple Gap::EventHandler objects to one ChainableGapEventHandler and then set the global Gap::EventHandler to the ChainableGapEventHandler. All registered EventHandlers will then be called when a Gap Event occurs.
Common functionality has been split off into a generic ChainableEventHandler for use by other EventHandler implementations. The ChainableEventHandler is essentially singly-linked list that propagates callbacks to all objects in the list.
The ChainableGattServerEventHandler enables chaining together GattServer::EventHandlers. An application can register separate event handlers (eg: for different services that need to handle GattServer events) and then set the global GattServer::setEventHandler to the instance of ChainableGattServerEventHandler with all registered GattServer::EventHandlers.
The connection event reported by the WB55 is incorrect if controller privacy is not enable and the peer connects with an unknown private resolvable address: The RPA field contains the connection address (it should be empty) and the peer address is all FF while it should be equal to the connection address.
```sh
[Warning] pal_rtc.h@76,6: type of 'PalRtcCompareSet' does not match original declaration [-Wlto-type-mismatch]
[Warning] pal_rtc.h@73,6: type of 'PalRtcEnableCompareIrq' does not match original declaration [-Wlto-type-mismatch]
[Warning] pal_rtc.h@74,6: type of 'PalRtcDisableCompareIrq' does not match original declaration [-Wlto-type-mismatch]
```
In Cordio, the global random address is used when the local device is connected instead of the advertising set one.
This can cause pairing to fail if the advertising set address and the global random address are different.
This workaround forces the global random address to be set when advertising is started and extended advertising is present.