Awesomeplayer : Frame dropping logic change

Changed late frame drop policy, now we are dropping only 1 in 8,
late (> 40ms) frames. Dropping every late frame result in lot of noticible
pauses, usually with peaky bitrate activity these pauses become more prominant.
Dropping few frames is still required to allow overall playback chain,
to regain the performance.
Experimentally decided to drop Max one late frame in 8.

Change-Id: If20848d619a76aaf8179b1e5c3155610e3bc85fd