Add SR_T_MQLIST.

This type consists of an array, with each item a two-member tuple,
representing an MQ/MQflags pair: the first item is the MQ (type
G_VARIANT_TYPE_UINT32), and the second is the MQ flags value
(G_VARIANT_TYPE_UINT64).

A GVariant of type SR_T_MQLIST can thus always represent more than
one MQ/MQflag pair.

include/libsigrok/libsigrok.h

@@ -149,6 +149,7 @@ enum sr_datatype {
 	SR_T_UINT64_RANGE,
 	SR_T_DOUBLE_RANGE,
 	SR_T_INT32,
+	SR_T_MQLIST,
 };
 
 /** Value for sr_datafeed_packet.type. */

src/hwdriver.c

@@ -295,6 +295,8 @@ SR_PRIV const GVariantType *sr_variant_type_get(int datatype)
 		return G_VARIANT_TYPE_TUPLE;
 	case SR_T_KEYVALUE:
 		return G_VARIANT_TYPE_DICTIONARY;
+	case SR_T_MQLIST:
+		return G_VARIANT_TYPE_ARRAY;
 	default:
 		return NULL;
 	}