net: change netdev->features to u32

Quoting Ben Hutchings: we presumably won't be defining features that
can only be enabled on 64-bit architectures.

Occurences found by `grep -r` on net/, drivers/net, include/

[ Move features and vlan_features next to each other in
  struct netdev, as per Eric Dumazet's suggestion -DaveM ]

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h
index 28df866..c652702 100644
--- a/drivers/net/sfc/net_driver.h
+++ b/drivers/net/sfc/net_driver.h
@@ -906,7 +906,7 @@
 	unsigned int phys_addr_channels;
 	unsigned int tx_dc_base;
 	unsigned int rx_dc_base;
-	unsigned long offload_features;
+	u32 offload_features;
 	u32 reset_world_flags;
 };