sh: Changed value of CACHE_OC_NUM_ENTRIES and CACHE_OC_WAY_SHIFT

SH4 is different a value of CACHE_OC_NUM_ENTRIES and
CACHE_OC_WAY_SHIFT every CPU.
This patch corrects these values.

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