net-next: vmxnet3 fixes [2/5] Interrupt control bitmap

A new bit map 'intrCtrl' is introduced in the DriverShared area. The 
driver should update VMXNET3_IC_DISABLE_ALL bit before writing IMR.

Signed-off-by: Ronghua Zang <ronghua@vmware.com>
Signed-off-by: Shreyas Bhatewara <sbhatewara@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>