arm: exynos: Remove duplicated "boardname" env setting

Various places in the code set "boardname" env property.  It was used
for booting from ITB images and choosing proper DTB file name.  Instead
of duplicating it, use existing U-Boot wide - "board_name".

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
4 files changed