ath: Convert ath_print(.., ATH_DBG_FATAL to ath_err

So these errors are always emitted at KERN_ERR level.
Remove ARRAY_SIZE casts, use printf type %zu

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/ahb.c b/drivers/net/wireless/ath/ath9k/ahb.c
index 1a984b0..25a6e44 100644
--- a/drivers/net/wireless/ath/ath9k/ahb.c
+++ b/drivers/net/wireless/ath/ath9k/ahb.c
@@ -35,10 +35,9 @@
 
 	pdata = (struct ath9k_platform_data *) pdev->dev.platform_data;
 	if (off >= (ARRAY_SIZE(pdata->eeprom_data))) {
-		ath_print(common, ATH_DBG_FATAL,
-			  "%s: flash read failed, offset %08x "
-			  "is out of range\n",
-			  __func__, off);
+		ath_err(common,
+			"%s: flash read failed, offset %08x is out of range\n",
+			__func__, off);
 		return false;
 	}