scsi: add lsi53c8xx_handle_legacy_cmdline() function

This is the function that will soon be used to replace lsi53c895a_create() and
lsi53c810_create().

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

hw/scsi/lsi53c895a.c

@@ -2290,3 +2290,10 @@ void lsi53c810_create(PCIBus *bus, int devfn)
 
     scsi_bus_legacy_handle_cmdline(&s->bus);
 }
+
+void lsi53c8xx_handle_legacy_cmdline(DeviceState *lsi_dev)
+{
+    LSIState *s = LSI53C895A(lsi_dev);
+
+    scsi_bus_legacy_handle_cmdline(&s->bus);
+}

include/hw/pci/pci.h

@@ -709,6 +709,7 @@ PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name);
 
 void lsi53c895a_create(PCIBus *bus);
 void lsi53c810_create(PCIBus *bus, int devfn);
+void lsi53c8xx_handle_legacy_cmdline(DeviceState *lsi_dev);
 
 qemu_irq pci_allocate_irq(PCIDevice *pci_dev);
 void pci_set_irq(PCIDevice *pci_dev, int level);