[MTD] Remove trailing whitespace

The newly-added cafe_ecc.c had a lot of it because of the way the lookup
table was auto-generated; clean up the other files too while we're at it.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index fc84ddc..c48aa79 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -406,7 +406,7 @@
 
 		/* Release the irq */
 		free_irq(this->irq, this);
-		
+
 		this->wait = onenand_wait;
 	}