drm/amdkfd: Use the consolidated MQD manager functions for GFX11

To remove duplication for GFX11 as well, use the common MQD manager
functions defined in kfd_mqd_manager.c for all version of managers

Signed-off-by: Shiwu Zhang <shiwu.zhang@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Mukul Joshi <mukul.joshi@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>