soc: stm32: stm32wb0x: Disable BT_AUTO_PHY_UPDATE & BT_AUTO_DATA_LEN_UPDATE

Put the default value for BT_AUTO_PHY_UPDATE and BT_AUTO_DATA_LEN_UPDATE
to "n" at SOC level since they cause "controller busy" due to starting
several parallel BLE procedures during connection by
"perform_auto_initiated_procedures" function. At the moment, ST controller
does not support parallelism, i.e. host should not initiate a new procedure
before previous one is completed.

Disable CONFIG_BT_HCI_ACL_FLOW_CONTROL at SOC level.

Signed-off-by: Ali Hozhabri <ali.hozhabri@st.com>