[OE-core] qemu-native build regularly failing

[Marko Lindqvist]

Build of qemu-native regularly fails with:
|   LINK  sh4-softmmu/qemu-system-sh4
| /usr/lib/x86_64-linux-gnu/libXext.so.6: undefined reference to
`_XEatDataWords'
| collect2: error: ld returned 1 exit status

This might be some dependency missing, as building first some packets
(+ more importantly their dependencies) that do not depend on qemu and
only then qemu dependant image success.


 - ML