arm: kirkwood: Instantiate cpufreq driver

Register a platform driver structure for the cpufreq driver.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Adam Baker <linux@baker-net.org.uk>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index d423d58..76fa766 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -501,6 +501,7 @@
 
 config ARCH_KIRKWOOD
 	bool "Marvell Kirkwood"
+	select ARCH_HAS_CPUFREQ
 	select ARCH_REQUIRE_GPIOLIB
 	select CPU_FEROCEON
 	select GENERIC_CLOCKEVENTS