Changes

cosmetic: Improve comment with spec references in Cell Selection Parameters

The fields are named using a specific formatting in TS 44.018 10.5.2.4,
but use another formatting in eg. TS 45.008.
Let's provide both so that a quick grep can match related code.

Change-Id: I2c1264ed97154a365ae3f6f9dc18031b7adad109