arch/sh/lib/strlen.S: Checkpatch cleanup

arch/sh/lib/strlen.S:38: ERROR: trailing whitespace
Signed-off-by: NAndrea Gelmini <andrea.gelmini@gelma.net>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/lib/strlen.S

@@ -35,7 +35,7 @@ ENTRY(strlen)
 	mov.b	@r4+,r1
 	tst	r1,r1
 	bt	8f
-	add	#1,r2	
+	add	#1,r2
 
 1:
 	mov	#0,r3