mtd: bcm47xxsflash: keep a reference to the BCMA

To implement erase and write support we need to "talk" with ChipCommon
BCMA core which serial flash it attached to.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/devices/bcm47xxsflash.c

@@ -61,6 +61,8 @@ static int bcm47xxsflash_bcma_probe(struct platform_device *pdev)
 	}
 	sflash->priv = b47s;
 
+	b47s->bcma_cc = container_of(sflash, struct bcma_drv_cc, sflash);
+
 	b47s->window = sflash->window;
 	b47s->blocksize = sflash->blocksize;
 	b47s->numblocks = sflash->numblocks;

drivers/mtd/devices/bcm47xxsflash.h

@@ -3,7 +3,11 @@
 
 #include <linux/mtd/mtd.h>
 
+struct bcma_drv_cc;
+
 struct bcm47xxsflash {
+	struct bcma_drv_cc *bcma_cc;
+
 	u32 window;
 	u32 blocksize;
 	u16 numblocks;