Bluetooth: Controller: lll: Add missing CTEInfo copy if conn encrypted

In case a connection is encrypted received PDU is decrypted by CCM.
CCM does not encrypt/decrypt S1 byte that stores CTEInfo.
In case of reception of a PDU by encrypted connection there is missing
CTEInfo in a memory where CCM stores decrypted PDU.
The CTEInfo data must be copied from scratch packet.

The commit adds code responsible for copying of the CTEInfo into
target PDU memory.

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