sh: ap_sh4a_4a: Fixed initialization value of DDR memory

The wrong value was set as value of column of DDR memory for ap_sh4a_4a.
10 is the right value. This fixed this problem.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>