drivers: add explicit interrupt.h includes

These files all use functions declared in interrupt.h, but currently rely
on implicit inclusion of this file (via netns/xfrm.h).

That won't work anymore when the flow cache is removed so include that
header where needed.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/mv88e6xxx/global2.c

@@ -13,6 +13,7 @@
  * (at your option) any later version.
  */
 
+#include <linux/interrupt.h>
 #include <linux/irqdomain.h>
 #include "mv88e6xxx.h"
 #include "global2.h"