Re-add media test mapping for platinum

Test: atest CtsMediaCodecTestCases
Test: Forrest
Bug: 220345068
Bug: 229286407
Fix: 236266961

Change-Id: I4b188c8dba379031d9e4022c6849ad99226955b1
Merged-In: I4b188c8dba379031d9e4022c6849ad99226955b1
(cherry picked from commit 56731f1019e548062bbb9f1b5fdb1ab0e9e385ec)
1 file changed