Add Known Issue about 32-bit bugs. am: cc61e5a983
Add Known Issue about 32-bit bugs. am: cc61e5a983

Original change: https://android-review.googlesource.com/c/platform/external/perfetto/+/1413631

Change-Id: Ibd68aea1383c3a9f506c4e29eb54d78d12d77047

google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto