[Midnightbsd-cvs] src: sys/sys: Get rid of GIANT lock in sensors framework.

[laffer1 at midnightbsd.org]

Log Message:
-----------
Get rid of GIANT lock in sensors framework. 

I've created a new sensorsdev_lock to protect list operations.  More work might be required in the individual sensor drivers (lm, it, amdtemp, etc).

Modified Files:
--------------
    src/sys/kern:
        kern_sensors.c (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/sys/kern/kern_sensors.c?r1=1.2&r2=1.3)
    src/sys/sys:
        sensors.h (r1.1 -> r1.2)
        (http://cvsweb.midnightbsd.org/src/sys/sys/sensors.h?r1=1.1&r2=1.2)