Build EthernetService.

This is included in the PRODUCT_BOOT_JARS because it needs to be
loaded by system_server via SystemServiceManager.startService,
which only looks at the boot classpath.

This is compiled on all devices as opposed to only devices with
a physical Ethernet port because we also support Ethernet over
USB.

Change-Id: I55bc422e2a7b700eea4b7513f96079502be36882
diff --git a/target/product/core_minimal.mk b/target/product/core_minimal.mk
index 0d3fb70..21b3398 100644
--- a/target/product/core_minimal.mk
+++ b/target/product/core_minimal.mk
@@ -36,6 +36,7 @@
     com.android.media.remotedisplay \
     com.android.media.remotedisplay.xml \
     drmserver \
+    ethernet-service \
     framework-res \
     idmap \
     installd \
@@ -86,6 +87,7 @@
     android.policy \
     services \
     apache-xml \
+    ethernet-service \
     webviewchromium \
     wifi-service