drm/amd/powerplay: fix the mp/smuio header for navi10

SMU11 should use mp11 and smuio11 headers.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>