Add libprocinfo to hwasan-postsubmit am: fb81f3828d am: e673c84d17 am: ebd4f4b5e1

Original change: https://android-review.googlesource.com/c/platform/system/libprocinfo/+/2032765

Change-Id: I3bd43e54ed595076fbf310db6d6071119597291b
tree: 8188b69fce26ffc1f8c00a25dcc4261cfedb6700
  1. include/
  2. testdata/
  3. Android.bp
  4. OWNERS
  5. process.cpp
  6. process_map_benchmark.cpp
  7. process_map_test.cpp
  8. process_test.cpp
  9. TEST_MAPPING