Create Power Stats AIDL interface

Bug: 162472196
Test: m
Change-Id: I225135c24cc713da085ff7238c1b0695e8ab93ed
diff --git a/powerstats/aidl/default/powerstats-default.xml b/powerstats/aidl/default/powerstats-default.xml
new file mode 100644
index 0000000..e07513d
--- /dev/null
+++ b/powerstats/aidl/default/powerstats-default.xml
@@ -0,0 +1,6 @@
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.powerstats</name>
+        <fqname>IPowerStats/default</fqname>
+    </hal>
+</manifest>