r8169: support setting the EEE tx idle timer on RTL8168h

Support setting the EEE tx idle timer also on RTL8168h.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/cfb69ec9-24c4-4aad-9909-fdae3088add4@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/realtek/r8169_main.c

@@ -2037,6 +2037,11 @@ static void rtl_set_eee_txidle_timer(struct rtl8169_private *tp)
 	unsigned int timer_val = READ_ONCE(tp->dev->mtu) + ETH_HLEN + 0x20;
 
 	switch (tp->mac_version) {
+	case RTL_GIGA_MAC_VER_46:
+	case RTL_GIGA_MAC_VER_48:
+		tp->tx_lpi_timer = timer_val;
+		r8168_mac_ocp_write(tp, 0xe048, timer_val);
+		break;
 	case RTL_GIGA_MAC_VER_61:
 	case RTL_GIGA_MAC_VER_63:
 	case RTL_GIGA_MAC_VER_65: