ARM: restart: netx: 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-netx/generic.c b/arch/arm/mach-netx/generic.c
index 00023b5..59e6797 100644
--- a/arch/arm/mach-netx/generic.c
+++ b/arch/arm/mach-netx/generic.c
@@ -187,3 +187,8 @@
 
 subsys_initcall(netx_init);
 
+void netx_restart(char mode, const char *cmd)
+{
+	writel(NETX_SYSTEM_RES_CR_FIRMW_RES_EN | NETX_SYSTEM_RES_CR_FIRMW_RES,
+	       NETX_SYSTEM_RES_CR);
+}