Fix on-board audio on the GXL and the jumpers on the XPS P60 and 560/L.

src/chipset/intel_piix.c

@@ -1621,7 +1621,10 @@ piix_init(const device_t *info)
     else
         cpu_set_isa_pci_div(3);
 
-    dma_alias_set();
+    if (dev->type > 1)
+        dma_alias_set();
+    else
+        dma_alias_set_piix();
 
     if (dev->type < 4)
         pci_enable_mirq(0);