Add @UnsupportedAppUsage annotations

For packages:
  android.bluetooth.le
  android.bluetooth

This is an automatically generated CL. See go/UnsupportedAppUsage
for more details.

Exempted-From-Owner-Approval: Mechanical changes to the codebase
which have been approved by Android API council and announced on
android-eng@

Bug: 110868826
Test: m
Change-Id: I88a1311e27c5f9a5f9d1035db76034f86f650efc
diff --git a/core/java/android/bluetooth/BluetoothGattCharacteristic.java b/core/java/android/bluetooth/BluetoothGattCharacteristic.java
index 243ad35..6d46b3a 100644
--- a/core/java/android/bluetooth/BluetoothGattCharacteristic.java
+++ b/core/java/android/bluetooth/BluetoothGattCharacteristic.java
@@ -15,6 +15,7 @@
  */
 package android.bluetooth;
 
+import android.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.ParcelUuid;
 import android.os.Parcelable;
@@ -182,6 +183,7 @@
      *
      * @hide
      */
+    @UnsupportedAppUsage
     protected int mInstance;
 
     /**
@@ -218,6 +220,7 @@
      *
      * @hide
      */
+    @UnsupportedAppUsage
     protected BluetoothGattService mService;
 
     /**
@@ -381,6 +384,7 @@
      *
      * @hide
      */
+    @UnsupportedAppUsage
     /*package*/ void setService(BluetoothGattService service) {
         mService = service;
     }
@@ -464,6 +468,7 @@
      *
      * @hide
      */
+    @UnsupportedAppUsage
     public void setKeySize(int keySize) {
         mKeySize = keySize;
     }