FIX: [aml;pivos] Fix 1080 on MX

From Pivos.
Ref: http://forum.kodi.tv/showthread.php?tid=211227&pid=1866798#pid1866798

This solves issues on amlogic where video is not fullscreen when fb size is different than hdmi size, e.g. fb 720p on HDMI 1080p on MX.
This require the standard amlogic "com.aml.settings" package to be enabled in firmware.