fmc: added mezzanine_data field

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

doc/fmc-bus.in

@@ -128,8 +128,9 @@ struct fmc_device {
         void *carrier_data;             /* "struct spec *" or equivalent */
         __iomem void *base;             /* May be NULL (Etherbone) */
         struct device dev;              /* For Linux use */
-	struct device *hwdev;		/* The underlying hardware device */
-	struct sdb_array *sdb;
+        struct device *hwdev;           /* The underlying hardware device */
+        struct sdb_array *sdb;
+        void *mezzanine_data;
 };
 @end smallexample
 

kernel/include/linux/fmc.h

@@ -73,6 +73,7 @@ struct fmc_device {
 	struct device dev;		/* For Linux use */
 	struct device *hwdev;		/* The underlying hardware device */
 	struct sdb_array *sdb;
+	void *mezzanine_data;
 };
 #define to_fmc_device(x) container_of((x), struct fmc_device, dev)