HWPOISON: mention HWPoison in Kconfig entry

Signed-off-by: Andi Kleen <ak@linux.intel.com>

mm/Kconfig

@@ -251,7 +251,7 @@ config MEMORY_FAILURE
 	  special hardware support and typically ECC memory.
 
 config HWPOISON_INJECT
-	tristate "Poison pages injector"
+	tristate "HWPoison pages injector"
 	depends on MEMORY_FAILURE && DEBUG_KERNEL
 	select PROC_PAGE_MONITOR