drm/amdgpu: pass unlocked flag to params at amdgpu_vm_bo_update_mapping

Pass unlocked flag value to amdgpu_vm_update_params.unlocked
struct member at amdgpu_vm_bo_update_mapping.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>