Add configurable RSRP boost for 5G NR SA.

Test: atest CellSignalStrengthNrTest
Bug: 187679048
Merged-In: Ic6becca786e5f039194ffb48ca572ff1ab7ce305
Change-Id: Ic6becca786e5f039194ffb48ca572ff1ab7ce305
(cherry picked from commit ae5f04d42ae43e477880f514b68943a0897d2a6b)
4 files changed