Wi-Fi: Handle disconnect in middle of DHCP operation

Restore power mode and BT co-ex settings when disconnect
happens in middle of DHCP operation.

Signed-off-by: Vishal Mahaveer <vishalm@ti.com>

Author: vishalmti

wifi/java/android/net/wifi/WifiStateMachine.java

@@ -1621,6 +1621,10 @@ private SupplicantState handleSupplicantStateChange(Message message) {
     private void handleNetworkDisconnect() {
         if (DBG) log("Stopping DHCP and clearing IP");
 
+        /* In case we were in middle of DHCP operation
+           restore back powermode */
+        handlePostDhcpSetup();
+
         /*
          * stop DHCP
          */