gpu-viv-bin-mx6q: Drop libgl-mx6-dev runtime depends on libgl-mesa-dev
The mesa is not build in case we don't have X11 enabled and forcing
this runtime dependency breaks the Wayland and DirectFB backends
build.
The right way to address this issue is to isolate the used headers
from mesa and get them into the gpu-viv-bin-mx6q tarball but this is
something that ought to be done by Vivante and/or Freescale.
Change-Id: I25126aa362fe3ce0e74ea0dee2f0cd59fae2c531 Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
