m68k: define 'VM_DATA_DEFAULT_FLAGS' no matter whether has 'NOMMU' or not

Define 'VM_DATA_DEFAULT_FLAGS' when 'NOMMU' to pass compiling.

So move it from "include/asm/page_mm.h to "include/asm/page.h"

The related make:

  make ARCH=m68k randconfig
  make ARCH=m68k menuconfig
    choose cross compiler
    disable MMU support
  make ARCH=m68k V=1 EXTRA_CFLAGS=-W

The related error:

  security/selinux/hooks.c: In function ‘selinux_init’:
  security/selinux/hooks.c:5821:21: error: ‘VM_DATA_DEFAULT_FLAGS’ undeclared (first use in this function)
Signed-off-by: NChen Gang <gang.chen@asianux.com>
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>

arch/m68k/include/asm/page.h

@@ -48,6 +48,9 @@ extern unsigned long _ramend;
 #include <asm/page_no.h>
 #endif
 
+#define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
+				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
 #include <asm-generic/getorder.h>
 
 #endif /* _M68K_PAGE_H */

arch/m68k/include/asm/page_mm.h

@@ -173,7 +173,4 @@ static inline __attribute_const__ int __virt_to_node_shift(void)
 
 #endif /* __ASSEMBLY__ */
 
-#define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
-				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
 #endif /* _M68K_PAGE_MM_H */