r8169: add MODULE_FIRMWARE entry for RTL8126A

Add the missing MODULE_FIRMWARE entry for RTL8126A.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/47ef79d2-59c4-4d44-9595-366c70c4ad87@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/realtek/r8169_main.c

@@ -676,6 +676,7 @@ MODULE_FIRMWARE(FIRMWARE_8168FP_3);
 MODULE_FIRMWARE(FIRMWARE_8107E_2);
 MODULE_FIRMWARE(FIRMWARE_8125A_3);
 MODULE_FIRMWARE(FIRMWARE_8125B_2);
+MODULE_FIRMWARE(FIRMWARE_8126A_2);
 
 static inline struct device *tp_to_dev(struct rtl8169_private *tp)
 {