qcacmn: Add NAN and TDLS cases for qdf_opmode_str

Add cases for NAN and TDLS in qdf_opmode_str to return the mode
in string format.

Change-Id: Ibdc22a337005d56485e5ee3b392f4d5d0089304a
CRs-Fixed: 2648590

qdf/src/qdf_types.c

@@ -56,6 +56,10 @@ const char *qdf_opmode_str(const enum QDF_OPMODE opmode)
 		return "BTAMP";
 	case QDF_AHDEMO_MODE:
 		return "AHDEMO";
+	case QDF_TDLS_MODE:
+		return "TDLS";
+	case QDF_NAN_DISC_MODE:
+		return "NAN";
 	default:
 		return "Invalid operating mode";
 	}