C2SoftFlacEnc: Fix integer overflows

Fix integer overflows leading to crash in C2SoftFlacEnc.cpp by changing data type of timestamp variables

Bug: 292860985
Test: POC in bug descriptions

Test: atest VtsHalMediaC2V1_0TargetAudioEncTest
Test: atest android.mediav2.cts.AudioEncoderTest

Change-Id: I92b171ae0f095f2eb57a444be768724196a808c0
2 files changed