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-tx28.c b/arch/arm/mach-mxs/mach-tx28.c
index 9a1f0e7..2c0862e 100644
--- a/arch/arm/mach-mxs/mach-tx28.c
+++ b/arch/arm/mach-mxs/mach-tx28.c
@@ -178,4 +178,5 @@
 	.init_irq = mx28_init_irq,
 	.timer = &tx28_timer,
 	.init_machine = tx28_stk5v3_init,
+	.restart	= mxs_restart,
 MACHINE_END