Prepare for BTS attribute reporting via OML

* use define for number of attributes instead of magic number
* add sub_model to gsm_bts struct
* expand number of BTS features
* mark attributes parameter to abis_nm_get_attr() as const

Change-Id: I7ecb0c4339530d3a8354a2f94b34063dda87e030
Related: OS#1614
3 files changed
tree: 8e6b35f73c3fed633bfc1c36111647feb9ef62e8
  1. contrib/
  2. debian/
  3. openbsc/
  4. .gitignore
  5. .gitreview
  6. .mailmap