[wpa_supplicant] Disable CONFIG_DPP2

Disable DPP R2 support in wpa_supplicant because the specification
is not finalized yet and subject to change.

Note: ACTS configuration file must set dpp_r1_test_only to "True".

Bug: 153199405
Test: act.py -c ../WifiDppConfig.json -tc WifiDppTest
Test: atest -c EasyConnectStatusCallbackTest
Change-Id: I903dd97f8d7b4966aa00819dd8cff885b039ba3d
1 file changed