Fix GATT Characteristic write type serialization

Default writeType for GATT characteristic was not being
serialized into Parcel. This cause errors when trying to
write into Characteristic.

Bug: 27910548
Change-Id: Ib2f88cf991123eaea244f16fa36deb0d773c5a33

core/java/android/bluetooth/BluetoothGattCharacteristic.java

@@ -284,6 +284,8 @@ public class BluetoothGattCharacteristic implements Parcelable {
         out.writeInt(mInstance);
         out.writeInt(mProperties);
         out.writeInt(mPermissions);
+        out.writeInt(mKeySize);
+        out.writeInt(mWriteType);
         out.writeTypedList(mDescriptors);
     }
 
@@ -303,6 +305,8 @@ public class BluetoothGattCharacteristic implements Parcelable {
         mInstance = in.readInt();
         mProperties = in.readInt();
         mPermissions = in.readInt();
+        mKeySize = in.readInt();
+        mWriteType = in.readInt();
 
         mDescriptors = new ArrayList<BluetoothGattDescriptor>();