staging: ks7010: replace uint8_t with u8 in ks_wlan_set_tx_gain

In function ks_wlan_set_tx_gain a cast to uint8_t is being used
to assign transmission gain. 'tx_gain' field is defined as u8 so
replace the cast to the correct type.
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ks7010/ks_wlan_net.c

@@ -2123,7 +2123,7 @@ static int ks_wlan_set_tx_gain(struct net_device *dev,
 	if (*uwrq > 0xFF)
 		return -EINVAL;
 
-	priv->gain.tx_gain = (uint8_t)*uwrq;
+	priv->gain.tx_gain = (u8)*uwrq;
 	priv->gain.tx_mode = (priv->gain.tx_gain < 0xFF) ? 1 : 0;
 	hostif_sme_enqueue(priv, SME_SET_GAIN);
 	return 0;