Blackfin arch: fix bug: kernel crash when enable SDIO host driver

update bfin-sdh platform data to fix this issue.

Pointed-out-by: Dominik Herwald <d.herwald@dsh-elektronik.de>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>