[ARM SMP] Add CPU hotplug support for Realview MPcore

Add platform specific parts for hotplug CPU support for the
Realview board.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-realview/Makefile b/arch/arm/mach-realview/Makefile
index a6a40da..36e76ba 100644
--- a/arch/arm/mach-realview/Makefile
+++ b/arch/arm/mach-realview/Makefile
@@ -5,4 +5,5 @@
 obj-y					:= core.o clock.o
 obj-$(CONFIG_MACH_REALVIEW_EB)		+= realview_eb.o
 obj-$(CONFIG_SMP)			+= platsmp.o headsmp.o
+obj-$(CONFIG_HOTPLUG_CPU)		+= hotplug.o
 obj-$(CONFIG_LOCAL_TIMERS)		+= localtimer.o