Fixes a bug introduced by AMDGPU_GEM_CREATE_EXPLICIT_SYNC. We still need
to wait for pipelined moves in the shared fences list.

v2: fix typo
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAndres Rodriguez <andresx7@gmail.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>