Bluetooth: controller: Copy the connect_ind into node_rx

The node_rx buffer does not contain the data from the connect ind, so
copy it over.
Also back up the adv pdu chan_sel bit so that it can be used to properly
select the correct channel selection algorithm

Signed-off-by: Joakim Andersson <joakim.andersson@nordicsemi.no>
Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>