GPU Calc: unit test cases for ISPMT in GPU calc

AMLOEXT-99 BUG

Change-Id: I4388b184b23cf616dacfb20c61d2295765925ede
Signed-off-by: haochen <haochen@multicorewareinc.com>
Signed-off-by: I-Jui (Ray) Sung <ray@multicorewareinc.com>
GPU Calc: implemented ISPMT in GPU calc

AMLOEXT-99 FIX

Change-Id: I8cd9f130c190e6925873a00579cb7c334201f418
Signed-off-by: haochen <haochen@multicorewareinc.com>
Signed-off-by: I-Jui (Ray) Sung <ray@multicorewareinc.com>