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-mx28evk.c b/arch/arm/mach-mxs/mach-mx28evk.c
index 064ec5a..d0cc37f 100644
--- a/arch/arm/mach-mxs/mach-mx28evk.c
+++ b/arch/arm/mach-mxs/mach-mx28evk.c
@@ -501,4 +501,5 @@
 	.init_irq	= mx28_init_irq,
 	.timer		= &mx28evk_timer,
 	.init_machine	= mx28evk_init,
+	.restart	= mxs_restart,
 MACHINE_END