Bluetooth: host: GATT Relocate bt_gatt_disconnected
Bluetooth: host: GATT Relocate bt_gatt_disconnected

Step1: Move bt_gatt_disconnected() to avoid forward declarations which
otherwise would be needed by a fix to lazy loading cleanup on
disconnect in step 2.

Signed-off-by: Kim Sekkelund <1bf584d7c1aa4e7c34e987a5e3c7de6ec437a9f9@oticon.com>

finikorg/zephyr,Vudentz/zephyr,Vudentz/zephyr,galak/zephyr,Vudentz/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,nashif/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,nashif/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,Vudentz/zephyr,nashif/zephyr,galak/zephyr