[IA64] add init declaration - nolwsys

Add __initdata to nolwsys.

Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/mm/init.c

@@ -556,7 +556,7 @@ count_reserved_pages (u64 start, u64 end, void *arg)
  * purposes.
  */
 
-static int nolwsys;
+static int nolwsys __initdata;
 
 static int __init
 nolwsys_setup (char *s)