[Passpoint] Add indication flag to wifiscanner logs

Add [PASSPOINT] flag to wifiscanner logs. Provides information
about which networks advertise Passpoint capability in their IEs.

Bug: 168493053
Test: dumpsys wifiscanner, verify output
AndroidWiFiPasspoint   [WPA2-EAP-CCMP][RSN-EAP-CCMP][ESS][PASSPOINT]

Change-Id: I0dd03d0fa242d536662b62ff649e64e92303b04c
Merged-In: I0dd03d0fa242d536662b62ff649e64e92303b04c
(cherry picked from commit 37f793e7ff2a2c4851651e654596a5e6fdbdb350)
1 file changed