Update for Android 12 and update version number to 20

Author: ataffanel

AndroidManifest.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="se.bitcraze.crazyfliecontrol2"
-    android:versionCode="19"
+    android:versionCode="20"
     android:versionName="0.7.3" >
 
     <uses-feature

src/se/bitcraze/crazyfliecontrol2/UsbLinkAndroid.java

@@ -91,7 +91,7 @@ public void initDevice(int vid, int pid) throws IOException, SecurityException {
         //request permissions
         if (mUsbDevice != null && !mUsbManager.hasPermission(mUsbDevice)) {
             Log.d(LOG_TAG, "Request permission");
-            mPermissionIntent = PendingIntent.getBroadcast(mContext, 0, new Intent(mContext.getPackageName()+".USB_PERMISSION"), 0);
+            mPermissionIntent = PendingIntent.getBroadcast(mContext, 0, new Intent(mContext.getPackageName()+".USB_PERMISSION"), PendingIntent.FLAG_IMMUTABLE);
             mUsbManager.requestPermission(mUsbDevice, mPermissionIntent);
         } else if (mUsbDevice != null && mUsbManager.hasPermission(mUsbDevice)) {
             Log.d(LOG_TAG, "Has permission");