mmc: Add module.h to drivers/mmc users assuming implicit presence.

We are cleaning up the implicit presence of module.h; these guys are
some of the people who just assume it will be there.  Call it out
explitly for those that really need it.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
[kdorfman@codeaurora.org: files are not exists: sdhci-pxav2.c, sdhci-pxav3.c
file is not updated: sdhci-pltfm.c]
Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org>