drm/amdgpu/gfx9: use reset default for PA_SC_FIFO_SIZE

Recommended by the hw team.

Reviewed-and-Tested-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
1 file changed