LCLS: add status parameter to Assignment Completed message

* add gsm0808_create_ass_compl2() with additional gsm0808_lcls_status
  parameter and make gsm0808_create_ass_compl() into trivial wrapper
  around it
* update tests accordingly

Change-Id: I547c6b8707123aa8c1ef636db88908df112d90a4
Related: OS#2487
diff --git a/include/osmocom/gsm/gsm0808.h b/include/osmocom/gsm/gsm0808.h
index 782f3ec..6d14e13 100644
--- a/include/osmocom/gsm/gsm0808.h
+++ b/include/osmocom/gsm/gsm0808.h
@@ -76,6 +76,12 @@
 				      const struct gsm0808_speech_codec *sc,
 				      const struct gsm0808_speech_codec_list
 				      *scl);
+struct msgb *gsm0808_create_ass_compl2(uint8_t rr_cause, uint8_t chosen_channel,
+				       uint8_t encr_alg_id, uint8_t speech_mode,
+				       const struct sockaddr_storage *ss,
+				       const struct gsm0808_speech_codec *sc,
+				       const struct gsm0808_speech_codec_list *scl,
+				       enum gsm0808_lcls_status lcls_bss_status);
 struct msgb *gsm0808_create_assignment_completed(uint8_t rr_cause,
 						 uint8_t chosen_channel,
 						 uint8_t encr_alg_id,