Bluetooth: Convert SMP flags into an enum

There's no reason to have explicit values for these flags. Convert them
to an enum to be consistent with other similar flags.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

net/bluetooth/smp.c

@@ -35,11 +35,13 @@
 
 #define AUTH_REQ_MASK   0x07
 
-#define SMP_FLAG_TK_VALID	1
-#define SMP_FLAG_CFM_PENDING	2
-#define SMP_FLAG_MITM_AUTH	3
-#define SMP_FLAG_COMPLETE	4
-#define SMP_FLAG_INITIATOR	5
+enum {
+	SMP_FLAG_TK_VALID,
+	SMP_FLAG_CFM_PENDING,
+	SMP_FLAG_MITM_AUTH,
+	SMP_FLAG_COMPLETE,
+	SMP_FLAG_INITIATOR,
+};
 
 struct smp_chan {
 	struct l2cap_conn *conn;