ARM: restart: highbank: use new restart hook

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

Acked-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c
index 88660d5..4508384 100644
--- a/arch/arm/mach-highbank/highbank.c
+++ b/arch/arm/mach-highbank/highbank.c
@@ -146,4 +146,5 @@
 	.timer		= &highbank_timer,
 	.init_machine	= highbank_init,
 	.dt_compat	= highbank_match,
+	.restart	= highbank_restart,
 MACHINE_END