[PATCH] dm_init unresolved reference to _exits

drivers/md/dm.c dm_int refers to _exits which is defined as __exitdata. 
With CONFIG_HOTPLUG=n, __exitdata is discarded.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/md/dm.c

@@ -146,7 +146,7 @@ int (*_inits[])(void) __initdata = {
 	dm_interface_init,
 };
 
-void (*_exits[])(void) __exitdata = {
+void (*_exits[])(void) = {
 	local_exit,
 	dm_target_exit,
 	dm_linear_exit,