ide: Fix build break caused by "ide: remove ideprobe_init()"

Fix build break of powerpc holly_defconfig:

In file included from arch/powerpc/platforms/embedded6xx/holly.c:24:
include/linux/ide.h:1206: error: 'CONFIG_IDE_MAX_HWIFS' undeclared here (not in a function)

There's no need to have a sized array in the prototype, might as well
turn it into a pointer.

It could probably be argued that large parts of the include file can be
covered under #ifdef CONFIG_IDE, but that's a larger undertaking.

Signed-off-by: Olof Johansson <olof@lixom.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 1af94ac..18e9b82 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1340,7 +1340,7 @@
 	}
 }
 
-int ide_device_add_all(u8 idx[MAX_HWIFS])
+int ide_device_add_all(u8 *idx)
 {
 	ide_hwif_t *hwif;
 	int i, rc = 0;
diff --git a/include/linux/ide.h b/include/linux/ide.h
index d7c0f9a..ce9b16f 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1201,7 +1201,7 @@
 
 void ide_undecoded_slave(ide_drive_t *);
 
-int ide_device_add_all(u8 idx[MAX_HWIFS]);
+int ide_device_add_all(u8 *idx);
 int ide_device_add(u8 idx[4]);
 
 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)