etnaviv: don't import allocated scanout resources via from_handle

etna_resource_from_handle() recomputes (or second guesses) a lot of
properties we already have available in the allocation call. To make
things a bit more easier to follow, just import the BO without going
through the full handle import.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7367>
1 file changed