virgl/gbm: Make it compile on old version of mesa.
Add definition of GBM_FORMAT_ABGR16161616F when it's missed so we can compile against mesa version before 20.0
Signed-off-by: Lepton Wu lepton@chromium.org
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Add definition of GBM_FORMAT_ABGR16161616F when it's missed so we can compile against mesa version before 20.0
Signed-off-by: Lepton Wu lepton@chromium.org