i40evf: use correct types

BugLink: http://bugs.launchpad.net/bugs/1536474

Don't use uint32_t type the kernel. Use u32 instead. No functional
change.

Change-ID: I77bbf3b6464edaef747c7104b43534032a4dba63
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit d82acb35)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

drivers/net/ethernet/intel/i40evf/i40evf_main.c

@@ -259,7 +259,7 @@ static void i40evf_fire_sw_int(struct i40evf_adapter *adapter, u32 mask)
 {
 	struct i40e_hw *hw = &adapter->hw;
 	int i;
-	uint32_t dyn_ctl;
+	u32 dyn_ctl;
 
 	if (mask & 1) {
 		dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTL01);