Use HexDump instead of java.lang.IntegralToString

java.lang.IntegralToString is being removed, replaced
all its usage by com.android.internal.util.HexDump.

(cherry picked from commit 3f72604be806c0173b5dca0225cadf6e7c872147)

Change-Id: I0527d580f5975dca0dfaa6f86fa3695dd49d0849
6 files changed