arm64: Fix comment after #endif

The config value used in the if was changed in
b433dce0, but the comment on the
corresponding end was not changed.

Signed-off-by: Odin Ugedal <odin@ugedal.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

arch/arm64/mm/mmu.c

@@ -776,7 +776,7 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
 
 	return 0;
 }
-#endif	/* CONFIG_ARM64_64K_PAGES */
+#endif	/* !ARM64_SWAPPER_USES_SECTION_MAPS */
 void vmemmap_free(unsigned long start, unsigned long end,
 		struct vmem_altmap *altmap)
 {