Bugfix/fix bluetooth sal hid device interface moudle cb change to const

[huangyulong3]

Memory Optimization: Change the bluetooth sal hid device interface module to const for reduce the ram size.

bug:v/84957

Rootcause: To reduce RAM resource consumption, the hid_attrs_template and hid_callback,
in the sal hid device interface module must be marked with the const modifier.
This ensures it is compiled and linked into Flash memory instead of RAM.

[Copilot]

Pull request overview

This pull request implements a memory optimization to reduce RAM usage by marking callback and configuration structures as const, which causes them to be stored in Flash memory instead of RAM.

Changes:

• Modified static callback and configuration structures to be const across multiple Bluetooth service stack files
• Added explicit casts when passing const structures to registration APIs that don't accept const parameters
• Applied the optimization consistently across HID, HFP, A2DP, AVRCP, SPP, GATT, advertising, and scanning modules

Reviewed changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
service/stacks/zephyr/sal_hid_device_interface.c	Made HID device callback structures const; added cast for registration
service/stacks/zephyr/sal_hfp_hf_interface.c	Made HFP HF callback structures const; added cast for registration
service/stacks/zephyr/sal_hfp_ag_interface.c	Made HFP AG callback structures const; added cast for registration
service/stacks/zephyr/sal_avrcp_interface.c	Made AVRCP target callback structures const
service/stacks/zephyr/sal_adapter_le_interface.c	Made LE adapter callback structures const; added casts and forward declarations
service/stacks/zephyr/sal_adapter_interface.c	Made BR/EDR adapter callback structures const; added casts for registration
service/stacks/zephyr/sal_a2dp_interface.c	Made A2DP callback and codec structures const; added casts for registration
service/profiles/spp/spp_service.c	Made SPP interface structure const
service/profiles/hid/hid_device_service.c	Made HID device interface structure const
service/ipc/socket/src/bt_socket_spp.c	Made socket SPP callback structure const; added cast for registration
service/ipc/socket/src/bt_socket_scan.c	Made scanner callback structure const; added cast for registration
service/ipc/socket/src/bt_socket_advertiser.c	Made advertiser callback structure const; added cast for registration
framework/btwrap/async/bt_gatt_feature.c	Made GATT client callback structure const; added cast for registration
feature/feature_async/src/bluetooth_ble_impl.c	Made advertiser and GATT client callback structures const; added casts

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[Copilot]

These forward declarations for le_conn_add and le_conn_find appear to be unused. A search of the file shows these functions are neither called nor defined anywhere in this file. If these are not used, they should be removed to avoid confusion.

Suggested change

	static le_conn_info_t* le_conn_add(const bt_address_t* addr);
	static le_conn_info_t* le_conn_find(const bt_address_t* addr);