Bluetooth: Change default state of ERTM disable flag

This is to allow for ERTM state machine replacement in the patches
that follow.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

net/bluetooth/l2cap_core.c

@@ -57,7 +57,7 @@
 #include <net/bluetooth/l2cap.h>
 #include <net/bluetooth/smp.h>
 
-bool disable_ertm;
+bool disable_ertm = 1;
 
 static u32 l2cap_feat_mask = L2CAP_FEAT_FIXED_CHAN;
 static u8 l2cap_fixed_chan[8] = { L2CAP_FC_L2CAP, };