Network: convert network devices to use struct device instead of class_device

This lets the network core have the ability to handle suspend/resume
issues, if it wants to.

Thanks to Frederik Deweerdt <frederik.deweerdt@gmail.com> for the arm
driver fixes.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index de7801d..f3404ae 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -268,7 +268,7 @@
 struct sk_buff *__netdev_alloc_skb(struct net_device *dev,
 		unsigned int length, gfp_t gfp_mask)
 {
-	int node = dev->class_dev.dev ? dev_to_node(dev->class_dev.dev) : -1;
+	int node = dev->dev.parent ? dev_to_node(dev->dev.parent) : -1;
 	struct sk_buff *skb;
 
  	skb = __alloc_skb(length + NET_SKB_PAD, gfp_mask, 0, node);