r8152: Advertise software timestamp information.

Driver calls skb_tx_timestamp(skb) in rtl8152_start_xmit(), but does not advertise the capability in ethtool.
Advertise software timestamp capabilities on struct ethtool_ops.

Signed-off-by: Abhishek Rawal <[email protected]>
Reviewed-by: Jamie Bainbridge <[email protected]>
Reviewed-by: Vadim Fedorenko <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: abhishek-rawal

drivers/net/usb/r8152.c

@@ -9311,6 +9311,7 @@ static const struct ethtool_ops ops = {
 	.set_ringparam = rtl8152_set_ringparam,
 	.get_pauseparam = rtl8152_get_pauseparam,
 	.set_pauseparam = rtl8152_set_pauseparam,
+	.get_ts_info = ethtool_op_get_ts_info,
 };
 
 static int rtl8152_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)