sh-sci: Get register size from platform device
sh-sci: Get register size from platform device

There is much SCI of SoC having within,
and the register size is also different in everyone.
So get from platform device.

Signed-off-by: Yoshinori Sato <7b39ff94cb259c2eec0f0bda4ceed2a4f98b3595@users.sourceforge.jp>
Acked-by: by: Geert Uytterhoeven <a1ff81395f7e6bf5b509fe9aab06bf3419493e1d@glider.be>
Reviewed-by: Simon Horman <9662bddcc379be37df16f02a449c344b4718c1a1@verge.net.au>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs