ARM: mach-shmobile: sh7372: make sure that fsi is peripheral of spu2

FSI act as peripheral circuits of the SPU2.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
diff --git a/arch/arm/mach-shmobile/board-mackerel.c b/arch/arm/mach-shmobile/board-mackerel.c
index cc1ccd8..362b883 100644
--- a/arch/arm/mach-shmobile/board-mackerel.c
+++ b/arch/arm/mach-shmobile/board-mackerel.c
@@ -1587,6 +1587,7 @@
 
 	hdmi_init_pm_clock();
 	sh7372_pm_init();
+	pm_clk_add(&fsi_device.dev, "spu2");
 }
 
 static void __init mackerel_timer_init(void)