Resolve error:

   nfapi/oai_integration/aerial/fapi_nvIPC.h:56:16: error: unknown type name ‘nvipc_params_t’
   56 | int nvIPC_Init(nvipc_params_t nvipc_params_s);

By including the header. Also, move the definiton of the struct to the
MAC, where it is actually stored, and out of the radio common_lib.h,
since this is not a radio (split 7/8) parameter.