MIPS: Whitespace cleanup.

Having received another series of whitespace patches I decided to do this
once and for all rather than dealing with this kind of patches trickling
in forever.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/mm/tlb-r4k.c

@@ -424,7 +424,7 @@ void __cpuinit tlb_init(void)
 		write_c0_pagegrain(pg);
 	}
 
-        /* From this point on the ARC firmware is dead.  */
+	/* From this point on the ARC firmware is dead.	 */
 	local_flush_tlb_all();
 
 	/* Did I tell you that ARC SUCKS?  */