p2p: add vts for addGroup_1_2

Bug: 64695709
Test: build - make vts
Test: atest VtsHalWifiSupplicantP2pV1_2TargetTest
Test: vts-tradefed run commandAndExit vts-hal --skip-all-system-status-check \
      --primary-abi-only --skip-preconditions --module \
      VtsHalWifiSupplicantP2pV1_2Target -l INFO

Change-Id: I679fbc7e55aea4a5b6baf3f4bf6f2b04fe7b7f7f