Patch merged into coreboot/master: nb/gm45/gma.c: Compute BLC_PWM_CTL value from PWM frequency

the following patch was just integrated into master:
commit 12bed2608f2f98fd41f6dac9c918123f51e830d4
Author: Arthur Heymans 
Date:   Thu Nov 24 13:23:05 2016 +0100

nb/gm45/gma.c: Compute BLC_PWM_CTL value from PWM frequency

This allows to set the backlight PWM frequency and the
    duty cycle in the devicetree instead of using a plain BLC_PWM_CTL
    value.

Change-Id: I4d9a555ac7ea5605712c1fcda994a6fcabf9acf3
    Signed-off-by: Arthur Heymans 
    Reviewed-on: https://review.coreboot.org/17597
    Tested-by: build bot (Jenkins)
    Reviewed-by: Nico Huber

See https://review.coreboot.org/17597 for details.

-gerrit