Allow radio access to netd_pid file.

They need to see when it changes so they know when netd bounces.

(cherrypicked from commit 71e9a7c4718f786c9d1bc5e6ab62d3f7d46dce66)

bug:18069270
Change-Id: I954cf43ff02f1d352015f128ef88b659e6d0f95a
1 file changed