Switch update_engine over to generic BootControlClient

Test: th
Change-Id: I5097a578d5809aec48c4cbdf2dc0359a28042fb2
diff --git a/Android.bp b/Android.bp
index 365568d..58bb0d0 100644
--- a/Android.bp
+++ b/Android.bp
@@ -286,6 +286,7 @@
         "android.hardware.boot@1.1",
         "android.hardware.boot@1.2",
         "android.hardware.boot-V1-ndk",
+        "libboot_control_client",
     ],
     header_libs: [
         "avb_headers",