ARM: restart: tegra: use new restart hook

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

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-tegra/board-harmony.c b/arch/arm/mach-tegra/board-harmony.c
index f0bdc5e..7eaa52d 100644
--- a/arch/arm/mach-tegra/board-harmony.c
+++ b/arch/arm/mach-tegra/board-harmony.c
@@ -189,4 +189,5 @@
 	.init_irq       = tegra_init_irq,
 	.timer          = &tegra_timer,
 	.init_machine   = tegra_harmony_init,
+	.restart	= tegra_assert_system_reset,
 MACHINE_END