dumpstate: add -v printable to logcat

(cherry pick from commit 7831638e2a142cbb082d63a60ad5c04ff63933e8)

In the case where binary data lands in an utf-8 log buffer,
ensure that the content is made printable.

Bug: 23517551
Change-Id: I41696372d07228875d01a19f0c7ab2cb7494b7ef
1 file changed