linux-imx

mmc: remove bfin_sdh driver

The blackfin architecture is getting removed, so this one
is obsolete now as well.

Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Aaron Wu <aaron.wu@analog.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>