Fix the ssid display issue

Reproduce steps:
1. Set a special AP name that contains "=" (looks like "-=^-^=-");
2. Connect to this AP;
3. The display of ssid will be incorrect;

Change-Id: Idc7433a42cf59932f5fb147f5500e0175f745399

Author: gongwuchun

wifi/java/android/net/wifi/WifiStateTracker.java

@@ -1373,7 +1373,7 @@ private void requestConnectionStatus(WifiInfo info) {
         int netId = -1;
         String[] lines = reply.split("\n");
         for (String line : lines) {
-            String[] prop = line.split(" *= *");
+            String[] prop = line.split(" *= *", 2);
             if (prop.length < 2)
                 continue;
             String name = prop[0];