Add util method to generate IPv4-mapped IPv6 address from IPv4 address

Cherry-pick of aosp/2795709 to backport VPN security fix to non-mainline
devices.
Having Merged-In to prevent automerger to udc-mainlie-prod where
frameworks/libs/net does not exist.

Bug: 193031925
Test: TH
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:03eb6f09360de988687c06940b6f13be7e650b34)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:29e53bd862d7b4c30552f188065e1239e84c401e)
Merged-In: Iaa5d5f31904f8a122cb96f2c3f0e3499a2577664
Change-Id: Iaa5d5f31904f8a122cb96f2c3f0e3499a2577664
1 file changed
tree: 1a6761fd2154f4540562158406b7f8763164a24c
  1. client-libs/
  2. common/
  3. .gitignore
  4. OWNERS
  5. PREUPLOAD.cfg
  6. TEST_MAPPING