msm_thermal: Constantly set maxfreq when throttled

Instead of just setting the lower maxfreq once when throttling, set it on every pass-through. This ensures that msm_thermal will forcefully keep the CPUs throttled in the event that the user changes the maxfreq.

Signed-off-by: Sultanxda <sultanxda@gmail.com>
Sultan_pyramid_defconfig: v1.8.0