rtl_nic: Add firmware for RTL8111D(L)

Add firmware for r8169 of kernel for RTL8111D
	rtl_nic/rtl8168d-1.fw
	rtl_nic/rtl8168d-2.fw

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

WHENCE

@@ -1478,3 +1478,17 @@ Licence: Redistributable. See LICENCE.rtlwifi_firmware for details.
 
 --------------------------------------------------------------------------
 
+Driver: r8169 - RealTek 8169/8168/8101 ethernet driver.
+
+File: rtl_nic/rtl8168d-1.fw
+File: rtl_nic/rtl8168d-2.fw
+
+Licence:
+ * Copyright (c) 2010, Realtek Semiconductor Corporation 
+ *
+ * Permission is hereby granted for the distribution of this firmware
+ * data in hexadecimal or equivalent format, provided this copyright
+ * notice is accompanying it.
+
+--------------------------------------------------------------------------
+