oscam: bump once more to activate
f16742321b9e939b1a76ef0269d11fc94cbb4144.
remove preferred linux-libc-headers versions

just use the latest version, we cannot allow
different versions to be used, because
all machines share the same mips32el feed.
Merge branch 'master' of git://git.code.sf.net/p/openpli/openpli-oe-core