LED Driver fix and SpeakerEQ

Chrome OS laptop module now properly initializes the keyboard LED driver for adjusting keyboard lighting levels.  This will create entries at
/sys//devices/platform/chromeos-keyboard-leds/leds/chromeos::kbd_backlight/.
Changes to the sound system that enable SpeakerEQ feature firmware
loading has also been included from the upstream Chromium OS kernel.
This will look for the "ctspeq.bin" file in your firmware directory.
The driver will gracefully ignore the file if it is missing.