qemu_command: Rename BuildNicStr to BuildLegacyNicStr

Makes it less ambiguous
Signed-off-by: NCole Robinson <crobinso@redhat.com>

src/qemu/qemu_command.c

@@ -3353,7 +3353,7 @@ qemuBuildMemoryDeviceStr(virDomainMemoryDefPtr mem)
 
 
 static char *
-qemuBuildNicStr(virDomainNetDefPtr net,
+qemuBuildLegacyNicStr(virDomainNetDefPtr net,
                       const char *prefix,
                       int vlan)
 {
@@ -8517,7 +8517,7 @@ qemuBuildInterfaceCommandLine(virQEMUDriverPtr driver,
             goto cleanup;
         virCommandAddArgList(cmd, "-device", nic, NULL);
     } else {
-        if (!(nic = qemuBuildNicStr(net, "nic,", vlan)))
+        if (!(nic = qemuBuildLegacyNicStr(net, "nic,", vlan)))
             goto cleanup;
         virCommandAddArgList(cmd, "-net", nic, NULL);