[PATCH] Fix Kconfig of DMA32 for ia64

I realized ZONE_DMA32 has a trivial bug at Kconfig for ia64.  In
include/linux/gfp.h on 2.6.15-rc5-mm1, CONFIG is define like followings.

#ifdef CONFIG_DMA_IS_DMA32
#define __GFP_DMA32	((__force gfp_t)0x01)	/* ZONE_DMA is ZONE_DMA32
*/
       :
       :

So, CONFIG_"ZONE"_DMA_IS_DMA32 is clearly wrong.
Signed-off-by: NYasunori Goto <y-goto@jp.fujitsu.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

arch/ia64/Kconfig

@@ -58,7 +58,7 @@ config IA64_UNCACHED_ALLOCATOR
 	bool
 	select GENERIC_ALLOCATOR
 
-config ZONE_DMA_IS_DMA32
+config DMA_IS_DMA32
 	bool
 	default y