Add cellInfoList_1_2 in 1.2/IRadioIndication.hal.

As part of the new NetworkScan API project, we need to add V1_2
cellInfoList in RadioIndication to support the V1_2 CellInfo as well.

Bug: 63984327, 69058403
Test: Basic telephony sanity
Change-Id: I53deb0d3b6ba58a86a8f734618841ff91d6dc6fa