mmc: core: Add 'card' to drive strength selection callback

In preparation for supporting also eMMC drive strength,
add the 'card' as a parameter so that the callback can
distinguish different types of cards if necessary.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --cc drivers/mmc/core/sd.c
Simple merge

diff --cc drivers/mmc/core/sdio.c
Simple merge

diff --cc include/linux/mmc/host.h
Simple merge