Add vendor dumpsys.

$ adb shell /vendor/bin/dumpsys -l
<hangs>
$ adb shell /vendor/bin/sh -c "/vendor/bin/dumpsys -l"
Currently running services:
...
$ adb root
$ adb shell /vendor/bin/dumpsys -l
Currently running services:
...

Bug: 123433249
Test: manual (see above)
Change-Id: I4d74be3ef43e7d65154be27c4cf85ab32e09dfef
diff --git a/cmds/dumpsys/Android.bp b/cmds/dumpsys/Android.bp
index f68b862..f99588f 100644
--- a/cmds/dumpsys/Android.bp
+++ b/cmds/dumpsys/Android.bp
@@ -20,8 +20,6 @@
     static_libs: [
         "libserviceutils",
     ],
-
-    clang: true,
 }
 
 //
@@ -36,7 +34,6 @@
     export_include_dirs: ["."],
 }
 
-
 //
 // Executable
 //
@@ -51,4 +48,15 @@
     ],
 }
 
-subdirs = ["tests"]
+cc_binary {
+    name: "dumpsys_vendor",
+    stem: "dumpsys",
+
+    vendor: true,
+
+    defaults: ["dumpsys_defaults"],
+
+    srcs: [
+        "main.cpp",
+    ],
+}