Move CompanionDeviceManagerService to a place of its own

Fixes: 37473452
Test: Ensure companion devi9ce functionality still works
Change-Id: I89624217373b3e77296c71f9429387d99d15e236
diff --git a/services/companion/Android.mk b/services/companion/Android.mk
new file mode 100644
index 0000000..be48761
--- /dev/null
+++ b/services/companion/Android.mk
@@ -0,0 +1,12 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := services.companion
+
+LOCAL_SRC_FILES += \
+      $(call all-java-files-under,java)
+
+LOCAL_JAVA_LIBRARIES := services.core
+
+include $(BUILD_STATIC_JAVA_LIBRARY)