edac: fix enabling of polling cell module

The edac driver on cell turned out to be not enabled because of a missing
op_state.  This patch introduces it.  Verified to work on top of Ben's
next branch.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NJens Osterkamp <jens@linux.vnet.ibm.com>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NDoug Thompson <dougthompson@xmission.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/edac/cell_edac.c

@@ -9,6 +9,7 @@
  */
 #undef DEBUG
 
+#include <linux/edac.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
@@ -164,6 +165,8 @@ static int __devinit cell_edac_probe(struct platform_device *pdev)
 	if (regs == NULL)
 		return -ENODEV;
 
+	edac_op_state = EDAC_OPSTATE_POLL;
+
 	/* Get channel population */
 	reg = in_be64(&regs->mic_mnt_cfg);
 	dev_dbg(&pdev->dev, "MIC_MNT_CFG = 0x%016lx\n", reg);