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/rapide.c b/drivers/ide/rapide.c
index bd4d7a8..c4da3dd 100644
--- a/drivers/ide/rapide.c
+++ b/drivers/ide/rapide.c
@@ -36,7 +36,7 @@
 	void __iomem *base;
 	struct ide_host *host;
 	int ret;
-	hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+	hw_regs_t hw, *hws[] = { &hw };
 
 	ret = ecard_request_resources(ec);
 	if (ret)
@@ -52,7 +52,7 @@
 	rapide_setup_ports(&hw, base, base + 0x818, 1 << 6, ec->irq);
 	hw.dev = &ec->dev;
 
-	ret = ide_host_add(&rapide_port_info, hws, &host);
+	ret = ide_host_add(&rapide_port_info, hws, 1, &host);
 	if (ret)
 		goto release;