Add support of of AIDL interface to hostapd server.

Add support of AIDL interface and AIDL service implementation.
Change hostapd to AIDL service and managed by service manager.
Hostapd client will need to use service manager to obtain the
interace and use AIDL client to call the interface methods.

Bug: 194806512
Test: Manual test, enable Wifi hotspot successfully.

Change-Id: Ic4b22250f05f9d59ee39ccc8305c62a29e9cfdaf
diff --git a/hostapd/android.hardware.wifi.hostapd.xml b/hostapd/android.hardware.wifi.hostapd.xml
index c688d3e..eb91ee2 100644
--- a/hostapd/android.hardware.wifi.hostapd.xml
+++ b/hostapd/android.hardware.wifi.hostapd.xml
@@ -1,11 +1,6 @@
 <manifest version="1.0" type="device">
-    <hal format="hidl">
+    <hal format="aidl">
         <name>android.hardware.wifi.hostapd</name>
-        <transport>hwbinder</transport>
-        <version>1.3</version>
-        <interface>
-            <name>IHostapd</name>
-            <instance>default</instance>
-        </interface>
+        <fqname>IHostapd/default</fqname>
     </hal>
 </manifest>