[MIPS] checkfiles: Fix "need space after that ','" errors.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/mm/tlb-r8k.c b/arch/mips/mm/tlb-r8k.c
index 266a47d..bd8409d 100644
--- a/arch/mips/mm/tlb-r8k.c
+++ b/arch/mips/mm/tlb-r8k.c
@@ -56,7 +56,7 @@
 	int cpu = smp_processor_id();
 
 	if (cpu_context(cpu, mm) != 0)
-		drop_mmu_context(mm,cpu);
+		drop_mmu_context(mm, cpu);
 }
 
 void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,