gsm0503_coding: use ahs tables when encoding ahs codec id

The encoder function gsm0503_tch_ahs_encode uses gsm0503_afs_ic_ubit
when encoding the CMR or FT (depends on the frame number). This is not
correct. It should use gsm0503_ahs_ic_ubit instead.

Change-Id: Id250b2102ac79ff222bd3ad9d1abc4b60abdd12b
Related: SYS#5549
diff --git a/src/coding/gsm0503_coding.c b/src/coding/gsm0503_coding.c
index 1bec56e..9c189cd 100644
--- a/src/coding/gsm0503_coding.c
+++ b/src/coding/gsm0503_coding.c
@@ -3007,7 +3007,7 @@
 		return -1;
 	}
 
-	memcpy(cB, gsm0503_afs_ic_ubit[id], 4);
+	memcpy(cB, gsm0503_ahs_ic_ubit[id], 4);
 
 	gsm0503_tch_hr_interleave(cB, iB);