config: rock64: enable efuse for stable mac addr

Enable the rockchip efuse driver on the Rock64 to
provide a stable ethernet address on the device.

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/configs/rock64-rk3328_defconfig b/configs/rock64-rk3328_defconfig
index 5e36612..e9f0415 100644
--- a/configs/rock64-rk3328_defconfig
+++ b/configs/rock64-rk3328_defconfig
@@ -72,6 +72,7 @@
 CONFIG_ROCKCHIP_GPIO=y
 CONFIG_SYS_I2C_ROCKCHIP=y
 CONFIG_MISC=y
+CONFIG_ROCKCHIP_EFUSE=y
 CONFIG_MMC_DW=y
 CONFIG_MMC_DW_ROCKCHIP=y
 CONFIG_SPI_FLASH_GIGADEVICE=y