imx-codec: bump to version 4.1.4

imx-codec: bump to version 4.1.4

Changelog
- Upgrade license chksum to v14 EULA
- Check for lib_src_ppp_arm11_elinux.so library before removing
- Fixes for error hadling and robustness

This patch is based on the Yocto equivalent:
https://github.com/Freescale/meta-freescale/commit/78856879

Implicitly tested through gstreamer as the 0.10 plugin relies on it:
 # gst-launch-1.0 playbin uri=file:///root/tears_of_steel_1080p.webm

Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>