sctp: add SCTP_CID_RECONF conversion in sctp_cname

Whenever a new type of chunk is added, the corresp conversion in
sctp_cname should be added. Otherwise, in some places, pr_debug
will print it as "unknown chunk".

Fixes: cc16f00f6529 ("sctp: add support for generating stream reconf ssn reset request chunk")
Signed-off-by: Xin Long <[e-mail]>
Acked-by: Marcelo R. Leitner <[e-mail]>
Acked-by: Neil Horman <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/sctp/debug.c

···
 	case SCTP_CID_AUTH:
 		return "AUTH";
 
+	case SCTP_CID_RECONF:
+		return "RECONF";
+
 	default:
 		break;
 	}