[PATCH] Sun-3: Add missing deactivate_mm()

Sun-3: Add missing deactivate_mm() (yes, there should be two of them in
include/asm-m68k/mmu_context.h: one for Motorola MMUs and one for Sun-3 MMUs)

include/asm-m68k/mmu_context.h

@@ -142,6 +142,8 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, str
 	activate_context(tsk->mm);
 }
 
+#define deactivate_mm(tsk,mm)	do { } while (0)
+
 extern inline void activate_mm(struct mm_struct *prev_mm,
 			       struct mm_struct *next_mm)
 {