Bluetooth: has: Make HAS registration dynamic

[larsgk]

This changes HAS registration to be dynamic
and let's the application set Hearing Aid Type

Often, devices are flashed with generic firmware with some
features stored post factory production, requiring
the settings to be moved from compile time to run-time.

This change will increase the RAM usage as the GATT
service is moved from ROM to RAM.

Signed-off-by: Lars Knudsen [email protected]
Co-author: Soren Engquist [email protected]

[MariuszSkamra]

Few changes requested, otherwise LGTM

[Thalley]

@larsgk Will review after UPF :)

[MariuszSkamra]

As the bt_has_hearing_aid_type represent 2 LSB bits in features, you need to redefine the enum values so that:

enum bt_has_hearing_aid_type {
	BT_HAS_HEARING_AID_TYPE_BINAURAL = BIT(0),
	BT_HAS_HEARING_AID_TYPE_MONAURAL = BIT(1),
	BT_HAS_HEARING_AID_TYPE_BANDED = BIT(2),
};

[larsgk]

As the bt_has_hearing_aid_type represent 2 LSB bits in features, you need to redefine the enum values so that:

enum bt_has_hearing_aid_type {
	BT_HAS_HEARING_AID_TYPE_BINAURAL = BIT(0),
	BT_HAS_HEARING_AID_TYPE_MONAURAL = BIT(1),
	BT_HAS_HEARING_AID_TYPE_BANDED = BIT(2),
};

oops - will fix ;)

[Thalley]

If we truly want to make HAS dynamically registered, this is OK as it is for me now :)