drm/amdgpu/mes11: enable reg active poll

commit a6b3b618 upstream.

Enable reg active poll in mes11.

Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Tested-and-acked-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: "Gong, Richard" <richard.gong@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>