mmc: host: Kconfig: fix spelling mistake "hardare" -> "hardware"

There is a spelling mistake in the Kconfig file. Fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20201114120819.416311-1-colin.king@canonical.com


Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>