ARM: exynos: use correct exynos4210-origen SoC in Kconfig

ARM: exynos: use correct exynos4210-origen SoC in Kconfig

There exists both a Origen board based on exynos4210, and a board
based on exynos4412. U-boot only supports the one based on exynos
4210, but Kconfig string was accidentally written as Exynos4412 Origen
in previous migration to Kconfig. Fix the string to clear up
confusion, and to not give the impression that both types of Origen
boards are supported.

Fixes: 72df68cc6b73 ("exynos: kconfig: move board select menu and common settings")

Signed-off-by: Henrik Grimler <henrik@grimler.se>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>