qdpc-host: rename interface to "quantenna".

This simplifies code by avoiding the need to determine the Quantenna
interface at runtime.

Change-Id: I93533a559c92d4cc2096e1a0a64450f52a9aef1d
diff --git a/drivers/net/wireless/quantenna/pcie2/host/common/topaz_vnet.c b/drivers/net/wireless/quantenna/pcie2/host/common/topaz_vnet.c
index 08bf5ec..e13ac76 100644
--- a/drivers/net/wireless/quantenna/pcie2/host/common/topaz_vnet.c
+++ b/drivers/net/wireless/quantenna/pcie2/host/common/topaz_vnet.c
@@ -155,7 +155,7 @@
 #endif
 
 struct vmac_cfg vmaccfg = {
-	QDPC_RX_QUEUE_SIZE, QDPC_TX_QUEUE_SIZE, "wlan%d", NULL
+	QDPC_RX_QUEUE_SIZE, QDPC_TX_QUEUE_SIZE, "quantenna", NULL
 };
 
 static char *ethaddr = NULL;