cpufreq: Fix build of s3c64xx cpufreq driver for header change

The header change has removed an implicit include of module.h, breaking
the build due to the use of THIS_MODULE. Fix that.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

drivers/cpufreq/s3c64xx-cpufreq.c

@@ -15,6 +15,7 @@
 #include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/regulator/consumer.h>
+#include <linux/module.h>
 
 static struct clk *armclk;
 static struct regulator *vddarm;