r8169: do not enable the TBI for the 8168 and the 81x0

The 8168c and the 8100e choke on it. I have not seen an indication
nor received a report that the TBI is being actively used on the
remaining 8168b and 8110. Let's disable it for now until someone
complains.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Matthias Winkler <m.winkler@unicon-ka.de>
Cc: Maarten Vanraes <maarten.vanraes@gmail.com>
Cc: Edward Hsu <edward_hsu@realtek.com.tw>

drivers/net/r8169.c

@@ -1741,7 +1741,8 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	tp->features |= rtl_try_msi(pdev, ioaddr, cfg);
 	RTL_W8(Cfg9346, Cfg9346_Lock);
 
-	if (RTL_R8(PHYstatus) & TBI_Enable) {
+	if ((tp->mac_version <= RTL_GIGA_MAC_VER_06) &&
+	    (RTL_R8(PHYstatus) & TBI_Enable)) {
 		tp->set_speed = rtl8169_set_speed_tbi;
 		tp->get_settings = rtl8169_gset_tbi;
 		tp->phy_reset_enable = rtl8169_tbi_reset_enable;