gma500: prune some unused variables

#include "psb_powermgmt.h"

#include <linux/pm_runtime.h>

/* MRST defines start */

uint8_t blc_freq;

uint8_t blc_minbrightness;

uint8_t blc_i2caddr;

uint8_t blc_brightnesscmd;

int lvds_backlight;		/* restore backlight to this value */

u32 CoreClock;

u32 PWMControlRegFreq;

	return retVal;

}

/**

/*

 * Set LVDS backlight level by I2C command

 *

 * FIXME: at some point we need to both track this for PM and also

 * disable runtime pm on MRST if the brightness is nil (ie blanked)

 */

static int psb_lvds_i2c_set_brightness(struct drm_device *dev,

					unsigned int level)

	if (i2c_transfer(&lvds_i2c_bus->adapter, msgs, 1) == 1) {

		DRM_DEBUG("I2C set brightness.(command, value) (%d, %d)\n",

			blc_brightnesscmd,

			dev_priv->lvds_bl->brightnesscmd,

			blc_i2c_brightness);

		return 0;

	}