Use proper gatt_notify_conn_update::status type at corresponding level am:...

Use proper gatt_notify_conn_update::status type at corresponding level am: 97302282 am: 560b2905 am: 6308d70e

Original change: https://android-review.googlesource.com/c/platform/system/bt/+/1477052

Change-Id: Iccb46cee21bda97740c550c4591d0f54a4dd454e