sh: update_mmu_cache() consolidation.

This splits out a separate __update_cache()/__update_tlb() for
update_mmu_cache() to wrap in to. This lets us share the common
__update_cache() bits while keeping special __update_tlb() handling
broken out.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/mm/tlb-nommu.c b/arch/sh/mm/tlb-nommu.c
index 71c742b..0ef5429 100644
--- a/arch/sh/mm/tlb-nommu.c
+++ b/arch/sh/mm/tlb-nommu.c
@@ -46,10 +46,13 @@
 	BUG();
 }
 
-void update_mmu_cache(struct vm_area_struct * vma,
-		      unsigned long address, pte_t pte)
+void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
 {
-	BUG();
+}
+
+void __update_cache(struct vm_area_struct *vma,
+		    unsigned long address, pte_t pte)
+{
 }
 
 void __init page_table_range_init(unsigned long start, unsigned long end,