ide: pass number of ports to ide_host_{alloc,add}() (v2)

Pass number of ports to ide_host_{alloc,add}() and then update
all users accordingly.

v2:
- drop no longer needed NULL initializers in buddha.c, cmd640.c and gayle.c
  (noticed by Sergei)

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/delkin_cb.c b/drivers/ide/delkin_cb.c
index a0de834..d4a76f2 100644
--- a/drivers/ide/delkin_cb.c
+++ b/drivers/ide/delkin_cb.c
@@ -77,7 +77,7 @@
 	struct ide_host *host;
 	unsigned long base;
 	int rc;
-	hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+	hw_regs_t hw, *hws[] = { &hw };
 
 	rc = pci_enable_device(dev);
 	if (rc) {
@@ -99,7 +99,7 @@
 	hw.irq = dev->irq;
 	hw.dev = &dev->dev;
 
-	rc = ide_host_add(&delkin_cb_port_info, hws, &host);
+	rc = ide_host_add(&delkin_cb_port_info, hws, 1, &host);
 	if (rc)
 		goto out_disable;