Change payload type to int32_t for fmq device tests

This is in preperation for more AIDL fmq tests. The types need to be the
same and AIDL does not support uint16_t.

Test: atest fmq_unit_tests fmq_test
Bug: 142326204
Change-Id: I95586cc836d831a0e31f8a825d2e88fbc67d3ef0
3 files changed
tree: 9a258cc37a83999b346bb92399ee29379fd9d1d5
  1. base/
  2. benchmarks/
  3. include/
  4. tests/
  5. Android.bp
  6. EventFlag.cpp
  7. FmqInternal.cpp
  8. OWNERS
  9. PREUPLOAD.cfg
  10. TEST_MAPPING