monitor: Stop spamming logs when GATT db cannot be loaded

monitor: Stop spamming logs when GATT db cannot be loaded

This stops calling hci_devba everytime the GATT db needs to be loaded
since that causes a raw socket to be open to read back the address
pointed by the index, instead this is done only once at assign_handle
and store in packet_conn_data.

Signed-off-by: Manika Shrivastava <manika.sh@samsung.com>
Signed-off-by: Ayush Garg <ayush.garg@samsung.com>