Add uevent tool to dump uevent events

Change-Id: Ia3f9453f6d0e105c99ad420b66d94908b93d1fa7
diff --git a/cmds/Android.bp b/cmds/Android.bp
index c87a1fe..d5d5a77 100644
--- a/cmds/Android.bp
+++ b/cmds/Android.bp
@@ -9,3 +9,10 @@
 		"libhidlbase",
 	],
 }
+
+cc_binary {
+	name: "uevent",
+	srcs: [
+		"uevent.cpp",
+	],
+}