Avoid using static mut variables.

Test: m vmbase_example_kernel_bin
Change-Id: I366cc93f63a5a759aa94f09b32368c0a0b05708e
diff --git a/guest/vmbase_example/Android.bp b/guest/vmbase_example/Android.bp
index ab21191..e5dfc2a 100644
--- a/guest/vmbase_example/Android.bp
+++ b/guest/vmbase_example/Android.bp
@@ -12,6 +12,7 @@
         "libdiced_open_dice_nostd",
         "liblibfdt_nostd",
         "liblog_rust_nostd",
+        "libspin_nostd",
         "libvirtio_drivers",
         "libvmbase",
     ],