Add power@1.3 to the VNDK.

This was missing. Now update-makefiles is consistent w/ it.

Bug: 110112323
Test: (sanity) build + boot walleye
Change-Id: I29d4535b906d475c3b09e5f0c732c960986d1e38
diff --git a/power/1.3/Android.bp b/power/1.3/Android.bp
index 65b7597..1869b56 100644
--- a/power/1.3/Android.bp
+++ b/power/1.3/Android.bp
@@ -3,6 +3,9 @@
 hidl_interface {
     name: "android.hardware.power@1.3",
     root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
     srcs: [
         "types.hal",
         "IPower.hal",