Bluetooth: Remove sk parameter from l2cap_chan_create()

Following the separation if core and sock code this change avoid
manipulation of sk inside l2cap_chan_create().

Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index c988df6..f6f0500 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -906,7 +906,7 @@
 int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm);
 int l2cap_add_scid(struct l2cap_chan *chan,  __u16 scid);
 
-struct l2cap_chan *l2cap_chan_create(struct sock *sk);
+struct l2cap_chan *l2cap_chan_create(void);
 void l2cap_chan_close(struct l2cap_chan *chan, int reason);
 void l2cap_chan_destroy(struct l2cap_chan *chan);
 int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,