NOMMU: Fallback for is_vmalloc_or_module_addr() should be inline

The NOMMU fallback for is_vmalloc_or_module_addr() should be static inline,
not just static, in linux/mm.h.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/mm.h b/include/linux/mm.h
index df08551..24c3956 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -288,7 +288,7 @@
 #ifdef CONFIG_MMU
 extern int is_vmalloc_or_module_addr(const void *x);
 #else
-static int is_vmalloc_or_module_addr(const void *x)
+static inline int is_vmalloc_or_module_addr(const void *x)
 {
 	return 0;
 }