[ARM] pxa: add cpufreq support

There have been patches hanging around for ages to add support for
cpufreq to PXA255 processors.  It's about time we applied one.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile
index 4263527..3133dc4 100644
--- a/arch/arm/mach-pxa/Makefile
+++ b/arch/arm/mach-pxa/Makefile
@@ -42,6 +42,7 @@
 
 # Misc features
 obj-$(CONFIG_PM)		+= pm.o sleep.o
+obj-$(CONFIG_CPU_FREQ)		+= cpu-pxa.o
 obj-$(CONFIG_PXA_SSP)		+= ssp.o
 
 ifeq ($(CONFIG_PXA27x),y)