arm: rmobile: kconfig: Remove '+S:' prefix from defconfig files

'+S' is unnecessary because boards of rmobile do not use SPL.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
CC: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
3 files changed