mb/asus/p8z77-v_le_plus: Use additional rt8168 MAC programming

Use an additional Realtek NIC MAC programming sequence recently
added to drivers/net/r8168.c.

BUG=https://ticket.coreboot.org/issues/579
TEST=Specified MAC address now recognized and retained by Linux r8169
driver without further work.

Change-Id: Ia1409874920b2e598e8b8b3c186fc46bd0cef296
Signed-off-by: Keith Hui <buurin@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87437
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

Documentation/mainboard/asus/p8z77-v_le_plus.md

@@ -100,8 +100,6 @@ See "PCIe config" section below for more details.
 
 ## Known issues
 
-- RTL8111F here has no EEPROM for vital product data such as MAC address, which is also not
-  being properly programmed. You may need to fuse your MAC address with [rtnicpg] instead.
 - For 7.1 analog audio to work, at least the front channel (green jack) must be connected.
 
 ## Untested

src/mainboard/asus/p8x7x-series/Kconfig

@@ -62,6 +62,7 @@ config BOARD_ASUS_P8Z77_V_LE_PLUS
 	select BOARD_ASUS_P8X7X_SERIES
 	select BOARD_ROMSIZE_KB_8192
 	select RT8168_SET_LED_MODE
+	select RT8168_PUT_MAC_TO_ERI
 	select SUPERIO_NUVOTON_NCT6779D
 	select USE_NATIVE_RAMINIT
 	select POWER_LED_USES_GPIO8