rild: add to readproc group

At least on shamu, rild scans through /proc looking for the
netmgr process. Make sure rild is in the appropriate group to
examine /proc entries.

Bug: 25608126
Bug: 23310674
Change-Id: I9d0aecf91bcec326a51c08bd3f08b27d81bb81d6
1 file changed
tree: 49b124861b7e779b0cb199d8ade95a4dadd42950
  1. include/
  2. libril/
  3. librilutils/
  4. reference-ril/
  5. rild/
  6. CleanSpec.mk