[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)
diff --git a/service/java/com/android/server/wifi/util/ScanResultUtil.java b/service/java/com/android/server/wifi/util/ScanResultUtil.java
index dc2281a..4085045 100644
--- a/service/java/com/android/server/wifi/util/ScanResultUtil.java
+++ b/service/java/com/android/server/wifi/util/ScanResultUtil.java
@@ -233,6 +233,10 @@
                 } else {
                     rssiInfo = String.format("%9d         ", r.level);
                 }
+                if ((r.flags & ScanResult.FLAG_PASSPOINT_NETWORK)
+                        == ScanResult.FLAG_PASSPOINT_NETWORK) {
+                    r.capabilities += "[PASSPOINT]";
+                }
                 pw.printf("  %17s  %9d  %18s   %7s    %-32s  %s\n",
                         r.BSSID,
                         r.frequency,