Fix problems with automatic module loading by adding MODULE_ALIAS.  Also
fix various load-time errors cause by incorrect or not present
platform_data.
Acked-by: NSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: NKevin Hilman <khilman@baylibre.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>