A little rework on the 286/386SX machine tables

Fixes some problems with the HDC's per machine.

src/machine/m_at_286_386sx.c

@@ -152,7 +152,7 @@ machine_at_quadt286_init(const machine_t *model)
     if (bios_only || !ret)
 	return ret;
 
-    machine_at_common_ide_init(model);
+    machine_at_common_init(model);
     device_add(&keyboard_at_device);
     device_add(&fdc_at_device);
     device_add(&headland_gc10x_device);