cnic: Convert ctx_flags to bit fields

so that we can additional bit definitions without requiring a spinlock.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/cnic.h b/drivers/net/cnic.h
index 676d008..9907cc2 100644
--- a/drivers/net/cnic.h
+++ b/drivers/net/cnic.h
@@ -168,8 +168,8 @@
 	wait_queue_head_t	waitq;
 	int			wait_cond;
 	unsigned long		timestamp;
-	u32			ctx_flags;
-#define	CTX_FL_OFFLD_START	0x00000001
+	unsigned long		ctx_flags;
+#define	CTX_FL_OFFLD_START	0
 	u8			ulp_proto_id;
 	union {
 		struct cnic_iscsi	*iscsi;