net: wireless: bcmdhd: Fix sched scan processing

Change-Id: I24eebe2723478b902ed4fb2e1f518994f41297f8
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
Linux 3.0.78
interactiveX: backported the following two interactive commits:

Minsung Kim:d908cd5: cpufreq: interactive: fix uninitialized spinlock
Lianwei Wang:66b2970: cpufreq: interactive: fix race on governor start/stop