[Detail] update formula MTK-Commit-Id: b9f88b15cd92250f44d42be59a3a3726ebf4529c Change-Id: Ibe18a1566e0a11d00fada935e8b7c40f36177b5f CR-Id: ALPS05496586 Feature: DRAM Signed-off-by: Chao Peng <chao.peng@mediatek.com> (cherry picked from commit 72f3f07753479bfb29529ca7208ff5e050a51f76)