[PATCH] m68knommu: remove use of obsolete MAP_NR macro processor.h

Remove use of obsolate MAP_NR macro.
Signed-off-by: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/asm-m68knommu/processor.h

@@ -121,7 +121,7 @@ unsigned long get_wchan(struct task_struct *p);
     ({			\
 	unsigned long eip = 0;	 \
 	if ((tsk)->thread.esp0 > PAGE_SIZE && \
-	    MAP_NR((tsk)->thread.esp0) < max_mapnr) \
+	    (virt_addr_valid((tsk)->thread.esp0))) \
 	      eip = ((struct pt_regs *) (tsk)->thread.esp0)->pc; \
 	eip; })
 #define	KSTK_ESP(tsk)	((tsk) == current ? rdusp() : (tsk)->thread.usp)