Add ethertype constant for Wake-on-LAN

Bug: 408247593
Test: atest NetworkStackTests
Flag: EXEMPT mainline
Change-Id: I5ff868ee66c2941c496db1fdfa02f0322e48d243
diff --git a/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
index 8d7ae5c..90dc0b1 100644
--- a/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
+++ b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
@@ -49,6 +49,7 @@
     public static final int ETHER_TYPE_ARP  = 0x0806;
     public static final int ETHER_TYPE_IPV4 = 0x0800;
     public static final int ETHER_TYPE_IPV6 = 0x86dd;
+    public static final int ETHER_TYPE_WAKE_ON_LAN = 0x0842;
     public static final int ETHER_HEADER_LEN = 14;
     public static final int ETHER_MTU = 1500;
     public static final byte[] ETHER_BROADCAST = new byte[] {