Staging: rtl8192e: Fixed style warning relating to printk()

This patch fixes following checkpatch.pl warning in file rtl_dm.c:

WARNING: Prefer [subsystem eg: netdev]_info([subsystem]dev, ... then dev_info(dev, ... then pr_info(...  to printk(KERN_INFO .
Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtl8192e/rtl_dm.c

@@ -2285,12 +2285,12 @@ void dm_CheckRfCtrlGPIO(void *data)
 
 	if (priv->bHwRadioOff && (eRfPowerStateToSet == eRfOn)) {
 		RT_TRACE(COMP_RF, "gpiochangeRF  - HW Radio ON\n");
-		printk(KERN_INFO "gpiochangeRF  - HW Radio ON\n");
+		netdev_info(dev, "gpiochangeRF  - HW Radio ON\n");
 		priv->bHwRadioOff = false;
 		bActuallySet = true;
 	} else if (!priv->bHwRadioOff && (eRfPowerStateToSet == eRfOff)) {
 		RT_TRACE(COMP_RF, "gpiochangeRF  - HW Radio OFF\n");
-		printk(KERN_INFO "gpiochangeRF  - HW Radio OFF\n");
+		netdev_info(dev, "gpiochangeRF  - HW Radio OFF\n");
 		priv->bHwRadioOff = true;
 		bActuallySet = true;
 	}