ARM: restart: mxs: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-mxs/mach-stmp378x_devb.c b/arch/arm/mach-mxs/mach-stmp378x_devb.c
index 6834dea..a626c07 100644
--- a/arch/arm/mach-mxs/mach-stmp378x_devb.c
+++ b/arch/arm/mach-mxs/mach-stmp378x_devb.c
@@ -117,4 +117,5 @@
 	.init_irq	= mx23_init_irq,
 	.timer		= &stmp378x_dvb_timer,
 	.init_machine	= stmp378x_dvb_init,
+	.restart	= mxs_restart,
 MACHINE_END