ARM: renesas: Drop unused sh_sdhi.h

This file is no longer used, the SDHI controller driver is long
superseded by drivers/mmc/renesas-sdhi.c which includes all the
details of the hardware. Remove this file include from all board
files and remove the file itself. No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Paul Barker <paul.barker.ct@bp.renesas.com>
12 files changed