[ARM SMP] Add local timer support for Realview MPcore

Add platform specific parts for local timer support for the
Realview board.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 3bfef09..ec77721 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -358,7 +358,7 @@
 
 config LOCAL_TIMERS
 	bool "Use local timer interrupts"
-	depends on SMP && n
+	depends on SMP && REALVIEW_MPCORE
 	default y
 	help
 	  Enable support for local timers on SMP platforms, rather then the