cosmetic: rename to sdp_audio_codecs_foreach()

Better match the pattern of sdp_audio_codecs_* instead of having
foreach_ in the front. Prepare for prepending osmo_ some day, because I
plan to move the SDP API to a separate library.

Change-Id: Ia96190e0bdb513886663be1c8c12be3b403b71c9
diff --git a/tests/msc_vlr/msc_vlr_test_call.c b/tests/msc_vlr/msc_vlr_test_call.c
index 4306a61..14c8ea3 100644
--- a/tests/msc_vlr/msc_vlr_test_call.c
+++ b/tests/msc_vlr/msc_vlr_test_call.c
@@ -1214,7 +1214,7 @@
 	}
 
 	expect_pos = expected_codecs;
-	foreach_sdp_audio_codec(codec, &sdp.audio_codecs) {
+	sdp_audio_codecs_foreach(codec, &sdp.audio_codecs) {
 		char subtype_name_wo_pt[16];
 		if (!*expect_pos) {
 			BTW("%s: %s: ERROR: did not expect %s", func, desc, codec->subtype_name);