Add "lightctl" tool to debug light HAL from root adb

Change-Id: I55926bb64b9ece087c9984b62303a6eeafad62c6
diff --git a/cmds/Android.bp b/cmds/Android.bp
new file mode 100644
index 0000000..c87a1fe
--- /dev/null
+++ b/cmds/Android.bp
@@ -0,0 +1,11 @@
+cc_binary {
+	name: "lightsctl",
+	srcs: [
+		"lightsctl.cpp",
+	],
+	shared_libs: [
+		"android.hardware.light@2.0",
+		"libutils",
+		"libhidlbase",
+	],
+}