cpufreq: OMAP: fixup for omap_device changes, include <linux/module.h>

Minor fixups to work starting with v3.2:
- use the new omap_device API for getting a device by name.
- need to include <linux/module.h>

Signed-off-by: Kevin Hilman <khilman@ti.com>

drivers/cpufreq/omap-cpufreq.c

@@ -24,6 +24,7 @@
 #include <linux/io.h>
 #include <linux/opp.h>
 #include <linux/cpu.h>
+#include <linux/module.h>
 
 #include <asm/system.h>
 #include <asm/smp_plat.h>
@@ -32,6 +33,7 @@
 #include <plat/clock.h>
 #include <plat/omap-pm.h>
 #include <plat/common.h>
+#include <plat/omap_device.h>
 
 #include <mach/hardware.h>
 
@@ -252,7 +254,7 @@ static int __init omap_cpufreq_init(void)
 		return -EINVAL;
 	}
 
-	mpu_dev = omap2_get_mpuss_device();
+	mpu_dev = omap_device_get_by_hwmod_name("mpu");
 	if (!mpu_dev) {
 		pr_warning("%s: unable to get the mpu device\n", __func__);
 		return -EINVAL;