ARM: s3c: Use strscpy to replace strlcpy

The strlcpy should not be used because it doesn't limit the source
length.  Preferred is strscpy.

Signed-off-by: XueBing Chen <chenxuebing@jari.cn>
Link: https://lore.kernel.org/r/3e0217ca.a1d.180f90f39c7.Coremail.chenxuebing@jari.cn


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>