iwl4965: fix %d confusingly prefixed with 0x in format string

Signed-off-by: Hans Wennborg <hans@hanshq.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlegacy/4965-mac.c

@@ -4633,7 +4633,7 @@ il4965_store_tx_power(struct device *d, struct device_attribute *attr,
 	else {
 		ret = il_set_tx_power(il, val, false);
 		if (ret)
-			IL_ERR("failed setting tx power (0x%d).\n", ret);
+			IL_ERR("failed setting tx power (0x%08x).\n", ret);
 		else
 			ret = count;
 	}