Staging: rtl8192e: Fix printk debug style warning

This fixes the following checkpatch.pl warnings:
WARNING: Prefer [subsystem eg: netdev]_dbg([subsystem]dev, ... then dev_dbg(dev,
 ... then pr_debug(...  to printk(KERN_DEBUG ...
Signed-off-by: Mahati Chamarthy <mahati.chamarthy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtllib_crypt_wep.c

@@ -44,14 +44,14 @@ static void *prism2_wep_init(int keyidx)
 
 	priv->tx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
 	if (IS_ERR(priv->tx_tfm)) {
-		printk(KERN_DEBUG "rtllib_crypt_wep: could not allocate "
+		pr_debug("rtllib_crypt_wep: could not allocate "
 		       "crypto API arc4\n");
 		priv->tx_tfm = NULL;
 		goto fail;
 	}
 	priv->rx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
 	if (IS_ERR(priv->rx_tfm)) {
-		printk(KERN_DEBUG "rtllib_crypt_wep: could not allocate "
+		pr_debug("rtllib_crypt_wep: could not allocate "
 		       "crypto API arc4\n");
 		priv->rx_tfm = NULL;
 		goto fail;