Move Hexdump.java to framework/

Move Hexdump.java to framework/ to make it accessible from other
framework class.

Test: m
Change-Id: If92b7f0e09edc65071152197c3894d4a652c1853
diff --git a/staticlibs/Android.bp b/staticlibs/Android.bp
index b1c653d..dad60f9 100644
--- a/staticlibs/Android.bp
+++ b/staticlibs/Android.bp
@@ -36,7 +36,6 @@
   srcs: [
       "device/com/android/net/module/util/DeviceConfigUtils.java",
       "device/com/android/net/module/util/FdEventsReader.java",
-      "device/com/android/net/module/util/HexDump.java",
       "device/com/android/net/module/util/NetworkMonitorUtils.java",
       "device/com/android/net/module/util/PacketReader.java",
       "device/com/android/net/module/util/SharedLog.java",
@@ -121,11 +120,11 @@
         "device/com/android/net/module/util/BpfDump.java",
         "device/com/android/net/module/util/BpfMap.java",
         "device/com/android/net/module/util/BpfUtils.java",
-        "device/com/android/net/module/util/HexDump.java",
         "device/com/android/net/module/util/IBpfMap.java",
         "device/com/android/net/module/util/JniUtil.java",
         "device/com/android/net/module/util/Struct.java",
         "device/com/android/net/module/util/TcUtils.java",
+        "framework/com/android/net/module/util/HexDump.java",
     ],
     sdk_version: "module_current",
     min_sdk_version: "29",
@@ -149,7 +148,6 @@
 java_library {
     name: "net-utils-device-common-struct",
     srcs: [
-        "device/com/android/net/module/util/HexDump.java",
         "device/com/android/net/module/util/Ipv6Utils.java",
         "device/com/android/net/module/util/PacketBuilder.java",
         "device/com/android/net/module/util/Struct.java",
@@ -371,10 +369,10 @@
     sdk_version: "core_platform",
     srcs: [
         "device/com/android/net/module/util/FdEventsReader.java",
-        "device/com/android/net/module/util/HexDump.java",
         "device/com/android/net/module/util/SharedLog.java",
         "framework/com/android/net/module/util/ByteUtils.java",
         "framework/com/android/net/module/util/CollectionUtils.java",
+        "framework/com/android/net/module/util/HexDump.java",
         "framework/com/android/net/module/util/LinkPropertiesUtils.java",
     ],
     libs: [
diff --git a/staticlibs/device/com/android/net/module/util/HexDump.java b/staticlibs/framework/com/android/net/module/util/HexDump.java
similarity index 99%
rename from staticlibs/device/com/android/net/module/util/HexDump.java
rename to staticlibs/framework/com/android/net/module/util/HexDump.java
index a27c0a3..a22c258 100644
--- a/staticlibs/device/com/android/net/module/util/HexDump.java
+++ b/staticlibs/framework/com/android/net/module/util/HexDump.java
@@ -20,6 +20,8 @@
 
 /**
  * Hex utility functions.
+ *
+ * @hide
  */
 public class HexDump {
     private static final char[] HEX_DIGITS = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',