virgl: Clean up the driconf definition of GLES_SAMPLES_PASSED_VALUE.

The right values ended up being passed to DRI_CONF_OPT_BEGIN_V, they were just
named wrong.

Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6753>
2 files changed