[BNX2]: Fix link change handling

Fix some link-related problems by doing a coalesce_now after link
change interrupt to flush out the transient link status.

To facilitate this, the host coalesce cmd register value is cached in
the device structure.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bnx2.h b/drivers/net/bnx2.h
index fd4b7f2..18bc091 100644
--- a/drivers/net/bnx2.h
+++ b/drivers/net/bnx2.h
@@ -4038,6 +4038,7 @@
 	struct statistics_block	*stats_blk;
 	dma_addr_t		stats_blk_mapping;
 
+	u32			hc_cmd;
 	u32			rx_mode;
 
 	u16			req_line_speed;