[opus] AM335x ARM Cortex-A8 performance drop opus 1.1

[Sebastian Reimers]

Yes!!! --enable-fixed-point did the trick. And many thanks for
clarification, you are my heroes ;-)

Opus 1.0.3 --comp9 
Runtime: 22 seconds (4.128x realtime)

Opus 1.1 --comp9
Runtime: 20 seconds (4.541x realtime)

nice regards,

Sebastian Reimers