egl/wayland: Fix calling flush on PRIME
What does this MR do and why?
egl/wayland: Fix calling flush on PRIME
Fixes: fd17c018e9a ("egl/wayland: replace a couple DRI2_FLUSH checks with non-kms_swrast checks")
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.