etnaviv: fix disabling of INT filter for real

etnaviv: fix disabling of INT filter for real

Missing a copy of the pipe_sampler_state into the etna_sampler_state object
lead to the texture_use_int_filter() to always see a max_anisotropy of 0, so
the INT filter wasn't disabled when necessary. Also state emission should
never change the state objects, as this might also lead to stale information
being kept around the in the state object.

Fixes: 89a41dae7702 (etnaviv: do not use int filter when
                     anisotropic filtering is used)

Cc: <mesa-stable@lists.freedesktop.org>
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/7638>