bluetooth : Add bluetooth support for QCA6174 chip.

Register the QCA6174 initialization routine with hciattach for
downloading firmware patches to the bluetooth controller.
Add optional support 'f' to control installation of line
discipline driver. Invoke hciattach from command line and
download the firmware patches:
        hciattach /dev/ttyHS0 qca 3000000 -t120 flow -f0

Upstream-Status: Inappropriate [enable feature]

cherry-pick and merged from:
	branch: LNX.LE.5.3
	commit: commit bb96f3b759e0b99db70014302ca12929fb42f554

Change-Id: I87f2927d7096904071a02d73d3afef0dc34db414

Signed-off-by: Rupesh Tatiya <>
Signed-off-by: Fugang Duan <>
5 files changed