[S390] sparse: fix sparse warnings about missing prototypes
Add prototypes and includes for functions used in different modules.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index accb372..f7ec548 100644
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -177,6 +177,7 @@
struct page;
void arch_free_page(struct page *page, int order);
void arch_alloc_page(struct page *page, int order);
+void arch_set_page_states(int make_stable);
static inline int devmem_is_allowed(unsigned long pfn)
{