[PATCH -mm] acpi: fix memory_hotplug externs

["Randy.Dunlap" <rdunlap@xenotime.net>]

From: Randy Dunlap <rdunlap@xenotime.net>

Spell CONFIG option correctly so that externs work.
Fixes these warnings:
drivers/acpi/acpi_memhotplug.c:248: warning: implicit declaration of function 'add_memory'
drivers/acpi/acpi_memhotplug.c:312: warning: implicit declaration of function 'remove_memory'

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
---
 linsrc/linux-2616-mm2/include/linux/memory_hotplug.h |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

--- rddunlap.orig/linsrc/linux-2616-mm2/include/linux/memory_hotplug.h
+++ rddunlap/linsrc/linux-2616-mm2/include/linux/memory_hotplug.h
@@ -105,7 +105,7 @@ static inline int __remove_pages(struct 
 }
 
 #if defined(CONFIG_MEMORY_HOTPLUG) || defined(CONFIG_ACPI_HOTPLUG_MEMORY) \
-	|| defined(CONFIG_ACPI_MEMORY_HOTPLUG_MODULE)
+	|| defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE)
 extern int add_memory(u64 start, u64 size);
 extern int remove_memory(u64 start, u64 size);
 #endif


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