libfslcodec: bump to version 4.0.8

libfslcodec: bump to version 4.0.8

Changelog since 4.0.7:
- Version alignment with other Multimedia components.

This patch is based on the Yocto equivalent:
https://github.com/Freescale/meta-fsl-arm/commit/6a1f559a

This package has been implicitely tested through gstreamer as the 0.10
plugin relies on it:
 # gst-launch-0.10 playbin uri=file:///root/tears_of_steel_1080p.webm

Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>