Bluetooth: Define and use PSM identifiers

Define assigned Protocol and Service Multiplexor (PSM) identifiers
and use them instead of magic numbers.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 4d36605..d244361 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -88,8 +88,8 @@
 	if (err < 0)
 		goto done;
 
-	if (__le16_to_cpu(la.l2_psm) == 0x0001 ||
-				__le16_to_cpu(la.l2_psm) == 0x0003)
+	if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_SDP ||
+	    __le16_to_cpu(la.l2_psm) == L2CAP_PSM_RFCOMM)
 		chan->sec_level = BT_SECURITY_SDP;
 
 	bacpy(&bt_sk(sk)->src, &la.l2_bdaddr);