sh: fix PFC registers definition for SH772{2, 3, 4}

Add missing port X data register, and fix the offset of ports Y and Z.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
sh: ecovec: correct romImage address in comment

romImage is set by CONFIG_ECOVEC_ROMIMAGE_ADDR to 0xA0040000.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>