net: remove interrupt.h inclusion from netdevice.h

* remove interrupt.g inclusion from netdevice.h -- not needed
* fixup fallout, add interrupt.h and hardirq.h back where needed.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/smsc9420.c b/drivers/net/smsc9420.c
index 4c92ad8..5e5e64d 100644
--- a/drivers/net/smsc9420.c
+++ b/drivers/net/smsc9420.c
@@ -19,6 +19,7 @@
  ***************************************************************************
  */
 
+#include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/netdevice.h>
 #include <linux/phy.h>