radio-iris: declare in a header, define in a source file

Change-Id: Ibf5b1d9f97c214e8bfcbe1339f645ea23e9d481e
radio: iris: transport: move radio_hci_smd_init to __init section

Change-Id: I37aba71dc5fdee00054172ed46a20d93c3e77766
radio: iris: fix smd init when iris-transport is not compiled as module

Change-Id: Id0d9a36f93ec387e08be3d041e60113d2cf75aa8
m8: defconfig: enable Qualcomm IRIS Transport

Change-Id: If227a6644019fa0c61b6179d9e5be3787de2f4e9
Merge changes If227a664,Id0d9a36f,I37aba71d,Ibf5b1d9f into cm-11.0

* changes:
  m8: defconfig: enable Qualcomm IRIS Transport
  radio: iris: fix smd init when iris-transport is not compiled as module
  radio: iris: transport: move radio_hci_smd_init to __init section
  radio-iris: declare in a header, define in a source file