ARM: 8400/1: use virt_to_idmap to get phys_reset address

This patch is to get correct physical address of the reset function for
PAE systems, which use aliased physical memory for booting.

See the "ARM: mm: Introduce virt_to_idmap() with an arch hook" for details.
Signed-off-by: NVitaly Andrianov <vitalya@ti.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/kernel/reboot.c

@@ -50,7 +50,7 @@ static void __soft_restart(void *addr)
 	flush_cache_all();
 
 	/* Switch to the identity mapping. */
-	phys_reset = (phys_reset_t)(unsigned long)virt_to_phys(cpu_reset);
+	phys_reset = (phys_reset_t)(unsigned long)virt_to_idmap(cpu_reset);
 	phys_reset((unsigned long)addr);
 
 	/* Should never get here. */