r8169: disable detection of chip version 45

It seems this chip version never made it to the wild. Therefore
disable detection and if nobody complains remove support completely
later.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/realtek/r8169_main.c

@@ -1986,7 +1986,10 @@ static enum mac_version rtl8169_get_mac_version(u16 xid, bool gmii)
 
 		/* 8168H family. */
 		{ 0x7cf, 0x541,	RTL_GIGA_MAC_VER_46 },
-		{ 0x7cf, 0x540,	RTL_GIGA_MAC_VER_45 },
+		/* It seems this chip version never made it to
+		 * the wild. Let's disable detection.
+		 * { 0x7cf, 0x540,	RTL_GIGA_MAC_VER_45 },
+		 */
 
 		/* 8168G family. */
 		{ 0x7cf, 0x5c8,	RTL_GIGA_MAC_VER_44 },