MIPS: tracing: Fix the indentation of mcount.S

The commit "MIPS: Tracing: Cleanup the arguments passing of
prepare_ftrace_return" has moved the "jal     prepare_ftrace_return"
instruction after the handling of the 3rd argument but forgot to remove
the superfluous space before the related instructions.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1475/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/kernel/mcount.S

@@ -165,12 +165,12 @@ NESTED(ftrace_graph_caller, PT_SIZE, ra)
 
 	/* arg3: Get frame pointer of current stack */
 #ifdef CONFIG_FRAME_POINTER
-	 move	a2, fp
+	move	a2, fp
 #else /* ! CONFIG_FRAME_POINTER */
 #ifdef CONFIG_64BIT
-	 PTR_LA	a2, PT_SIZE(sp)
+	PTR_LA	a2, PT_SIZE(sp)
 #else
-	 PTR_LA	a2, (PT_SIZE+8)(sp)
+	PTR_LA	a2, (PT_SIZE+8)(sp)
 #endif
 #endif