microdroid: add missing lib(heapprofd_client_api.so)

heapprofd_client_api.so should be provided by system and used by
com.android.art apex. Even if "art" apex is not included in microdroid,
microdroid should provide it so that "art" apex can be added when
launching microdroid VM instance.

Bug: 187550837
Test: launch microdroid
Test: heapprofd_client_api.so is in /system/lib
      heapprofd_client_api.so is listed in /system/etc/linker.config.pb
Change-Id: I90efb8fa2758e6b87c45f3408ebc7a77c799dded
diff --git a/microdroid/Android.bp b/microdroid/Android.bp
index f2030d1..55075ca 100644
--- a/microdroid/Android.bp
+++ b/microdroid/Android.bp
@@ -59,6 +59,9 @@
         "libadbd_auth",
         "libadbd_fs",
 
+        // "com.android.art" requires
+        "heapprofd_client_api",
+
         "apexd",
         "debuggerd",
         "linker",