Android NDK r21 (build 6113669)
Update NDK prebuilts to build 5942325.

Taken from branch aosp-simpleperf-release.

Bug: none
Test: run test.py on darwin/linux/windows with devices and emulators.

Change-Id: I83b32a4a0c09ce62b9af3d3f1034a8e61459a116
(cherry picked from commit b56d3aca94a39d4beb2e0e27d9e9fae9908d9ab6)
19 files changed