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/falconide.c b/drivers/ide/falconide.c
index 770cfa6..adb5b0c 100644
--- a/drivers/ide/falconide.c
+++ b/drivers/ide/falconide.c
@@ -138,7 +138,7 @@
 static int __init falconide_init(void)
 {
 	struct ide_host *host;
-	hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+	hw_regs_t hw, *hws[] = { &hw };
 	int rc;
 
 	if (!MACH_IS_ATARI || !ATARIHW_PRESENT(IDE))
@@ -153,7 +153,7 @@
 
 	falconide_setup_ports(&hw);
 
-	host = ide_host_alloc(&falconide_port_info, hws);
+	host = ide_host_alloc(&falconide_port_info, hws, 1);
 	if (host == NULL) {
 		rc = -ENOMEM;
 		goto err;