Mark RSSNR in 4G as an optional support, and vendor dependency

Test: build
Bug: 135717625
Change-Id: Iaf42797b2d388843778ce5fedbd28861f340ec5c
Merged-In: Iaf42797b2d388843778ce5fedbd28861f340ec5c
(cherry picked from commit 42f01a6477fc224d67b3112cc50a7d7d56f753f2)
3 files changed