give permission to system_server creating location_data_file

There are features that system_server needs to share location_data_file with gps
proceses. Depending on the feature launch / enable sequence, either process can
be the one first creating the file.

Change-Id: I6a16fc72a2633bf5665b1d38488b3a05111b3f49
CRs-Fixed: 788356
1 file changed