[SCSI] gdth: switch to modern scsi host registration

  - Use scsi_add_host and friends and track instances ourselves. And
    generally modernize the driver's structure.

  - TODO: Next we can remove the controller table
  - TODO: Fix use of deprecated pci_find_device()

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/gdth.h b/drivers/scsi/gdth.h
index e8b9eb77..e6178c4 100644
--- a/drivers/scsi/gdth.h
+++ b/drivers/scsi/gdth.h
@@ -854,6 +854,7 @@
 /* controller information structure */
 typedef struct {
     struct Scsi_Host    *shost;
+    struct list_head    list;
     ushort      	hanum;
     ushort              oem_id;                 /* OEM */
     ushort              type;                   /* controller class */