Add libosmocodec for octphy build
Add libosmocodec for octphy build

Similar to 45822227577cba5c6c4a4d4d61a7a9e8b4992c25 fix build by linking
with libosmocodec explicitly.

Change-Id: Ib52135936ae02d804b60f61088b4bdd227a71aa0

osmocom/osmo-bts,osmocom/osmo-bts,osmocom/osmo-bts