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/wan/dscc4.c b/drivers/net/wan/dscc4.c
index acb9ea8..3590d58 100644
--- a/drivers/net/wan/dscc4.c
+++ b/drivers/net/wan/dscc4.c
@@ -99,6 +99,7 @@
 #include <asm/irq.h>
 
 #include <linux/init.h>
+#include <linux/interrupt.h>
 #include <linux/string.h>
 
 #include <linux/if_arp.h>