From a89612aac3cc6b13e6738bd70e05faf6f3fc8d9e Mon Sep 17 00:00:00 2001
From: Marcel Holtmann <marcel@holtmann.org>
Date: Fri, 5 Dec 2014 10:55:53 +0100
Subject: [PATCH] Bluetooth: Add HCI_RSSI_INVALID for unknown RSSI value

The Bluetooth core specification defines the value 127 as invalid for
RSSI values. So instead of hard coding it, lets add a constant for it.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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