Bluetooth: Controller: df: Use PDUs CTEInfo to config radio TX

CTE type and length parameters in connected mode are dependent
on remote CTE request procedure. These parameters are required
to setup radio to correctly transmit CTE. The same parameters
are also included in CTEInfo byte of data channel PDU header.
The parameters were provided to LLL with PDU to be transmitted
and by lll_conn::df_tx_cfg, hence it was redundant.
The PDUs CTEInfo has to be set before transmission anyway.
The contents of the PDU are set in ULL by CTE RSP control
procedure. To remove redundancy CTE length and type from lll_df_-
conn_tx_cfg were removed from ll_df_conn_tx_cfg. It was better
option becuse it saves instructions in LLL.

Radio in connected mode was configured by lll_df_conn_cte_tx_enable.
The function just unpacked the lll_df_conn_tx_cfg mebmers and
called static function df_cte_tx_configure.
Instead of extending parameters list of lll_df_conn_cte_tx_enable,
the function was removed and df_cte_tx_configure was changed to
be global function - lll_df_cte_tx_configure.
Now LLL directly passes all parameters from pdu_data::cte_info
and ll_df_conn_tx_cfg to lll_df_cte_tx_configure.

Signed-off-by: Piotr Pryga <piotr.pryga@nordicsemi.no>