net: qlcnic: include irq.h for irq definitions

The qlcnic driver fails to build on ARM with errors like:

In file included from drivers/net/ethernet/qlogic/qlcnic/qlcnic.h:36:0,
from drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c:8:
drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h:585:1: error: unknown type name 'irqreturn_t'
irqreturn_t qlcnic_83xx_clear_legacy_intr(struct qlcnic_adapter *);
^

Nothing in the driver is explicitly including the irq definitions, so we add an include of linux/irq.h to pick them up.

---
 drivers/net/ethernet/qlogic/qlcnic/qlcnic.h | 1 +
 1 file changed, 1 insertion(+)

index f19f81cde134..cbc897e6bb8f 100644
@@ -23,6 +23,7 @@
 #include <linux/ethtool.h>
 #include <linux/mii.h>
 #include <linux/timer.h>
+#include <linux/irq.h>
 
 #include <linux/vmalloc.h>
 

1.8.5.3

From: Josh Boyer <[email protected]>
Date: Wed, 2 Apr 2014 11:25:47 -0400

Applied, thanks Josh.