V2:
a. clear entries allocation
b. fix entries index calculation
c. need alloc sub level even parent bo was allocated
Signed-off-by: Christian König <christian.koenig@amd.com> (v1) Reviewed-by: Alex Deucher <alexander.deucher@amd.com> (v1) Signed-off-by: Chunming Zhou <David1.Zhou@amd.com> (v2) Acked-by: Alex Deucher <alexander.deucher@amd.com> (v2) Signed-off-by: Alex Deucher <alexander.deucher@amd.com>