[U-Boot] [U-Boot,1/2] rockchip: rk3036: ram: update license

[Philipp Tomsich]

> All the source code of sdram_rk3036.c are from Rockchip, update the
> copyright to owned by Rockchip.
> 
> Because rockchip may use this copy of code both for open source
> project and internal project, update the license to use both
> GPL2.0+ and BSD-3 Clause.
> 
> Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
> ---
> 
>  arch/arm/mach-rockchip/rk3036/sdram_rk3036.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 

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