drivers/net: Use octal not symbolic permissions

Prefer the direct use of octal for permissions.

Done with checkpatch -f --types=SYMBOLIC_PERMS --fix-inplace
and some typing.

Miscellanea:

o Whitespace neatening around these conversions.

Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index 3127bc8..4dd0668 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -2113,9 +2113,9 @@ static ssize_t store_rxbuf(struct device *dev,
 	return len;
 }
 
-static DEVICE_ATTR(rxbuf_min, S_IRUGO|S_IWUSR, show_rxbuf, store_rxbuf);
-static DEVICE_ATTR(rxbuf_max, S_IRUGO|S_IWUSR, show_rxbuf, store_rxbuf);
-static DEVICE_ATTR(rxbuf_cur, S_IRUGO, show_rxbuf, NULL);
+static DEVICE_ATTR(rxbuf_min, 0644, show_rxbuf, store_rxbuf);
+static DEVICE_ATTR(rxbuf_max, 0644, show_rxbuf, store_rxbuf);
+static DEVICE_ATTR(rxbuf_cur, 0444, show_rxbuf, NULL);
 
 static struct attribute *xennet_dev_attrs[] = {
 	&dev_attr_rxbuf_min.attr,