mm: fix obsolete function name above debug_pagealloc_enabled_static()

Since commit 0401351 ("mm, page_alloc: do not rely on the order of
page_poison and init_on_alloc/free parameters"), init_debug_pagealloc() is
converted to init_mem_debugging_and_hardening().  Later it's renamed to
mem_debugging_and_hardening_init() via commit f2fc4b4 ("mm: move
init_mem_debugging_and_hardening() to mm/mm_init.c").

Link: https://lkml.kernel.org/r/20230720112806.3851893-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

include/linux/mm.h

@@ -3465,8 +3465,8 @@ static inline bool debug_pagealloc_enabled(void)
 }
 
 /*
- * For use in fast paths after init_debug_pagealloc() has run, or when a
- * false negative result is not harmful when called too early.
+ * For use in fast paths after mem_debugging_and_hardening_init() has run,
+ * or when a false negative result is not harmful when called too early.
  */
 static inline bool debug_pagealloc_enabled_static(void)
 {