drm/nouveau/mmu/tu102-: remove write to 0x100e68 during tlb invalidate
This was cargo-culted from traces of RM when the code was written, but
we probably shouldn't be touching NV_PFB regs while GSP-RM is running.
From traces, it looks like NVIDIA dropped this sometime between 510.54
and 515.48.07, so I guess we can too.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230918202149.4343-2-skeggsb@gmail.com
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