ODROID-C: enable CONFIG_AML_VOUT_FRAMERATE_AUTOMATION

This will enable the features below:
  1) When playing video, system will change HDMI’s fresh rate to video’s fresh rate.
  2) When playing video with resolution/fresh-rate as below, system will change
     HDMI’s fresh rate
        o. 480p59hz,
        o. 720p-50hz,720p-60hz
        o. 1080p-24hz,1080p-50hz,1080p-60hz
        o. 1080i59h
        o. 4k2k:4k2k-24hz, 4k2k-25hz,4k2k-30hz
  3) When playing video with fresh rate 23.97/29.97/59.94, it will fine tune
     HPLL(it won’t change HDMI’s refresh rate)
        o. 1080p-23.97hz
        o. 1080p-59.94hz
        o. 720p-59.94hz
        o. 4k2k-23.97hz
        o. 4k2k-29.97hz

Change-Id: Id22170a4ac561d6e28b0585f78a459e7b328a932
Signed-off-by: Dongjin Kim <tobetter@gmail.com>