Make CS.isTetheringSupported dynamic

It used to be set at boot, but that was too quick to pick up carrier
specific resources.  With this change even if you switch sims subequent
checks get the new values.

bug:9865616
Change-Id: I8c270c6b02fc6bdd3c3d76ceea58172df25e058d
1 file changed
tree: bbd7b4f9fe31d19c9bdff7654aa70be078145dda
  1. core/
  2. services/