[U-Boot] [U-Boot, 2/3] rockchip: firefly-rk3399: enable EFUSE driver

[Philipp Tomsich]

> Enable the EFUSE driver for get the cpuid and serial.
> 
> Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
> Acked-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> ---
> 
>  configs/firefly-rk3399_defconfig | 2 ++
>  include/configs/evb_rk3399.h     | 3 +++
>  2 files changed, 5 insertions(+)
> 

Reviewed-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>