drm/amdgpu: Enable KFD with MES enabled

Enable KFD initialization with MES enabled.

Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Acked-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>