mmc: sdhci-spear: Remove exported header

Move the member for card_int_gpio into the struct spear_sdhci.

In this way we eliminate the last user of the struct sdhci_plat_data,
which enables us to remove the exported header for sdhci-spear.

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

diff --cc drivers/mmc/host/sdhci-spear.c
Simple merge

diff --cc include/linux/mmc/sdhci-spear.h
Simple merge