lvm: Enable host support

- Removed __unused that is not supported by host toolchain
- Removed unused libdl dependency from libbundlewrapper

Bug: 180116440
Test: run lvm_benchmark on host

Change-Id: I2b522ba543c1c2722dde7d672e038c547dd1aad6
diff --git a/media/libeffects/lvm/benchmarks/Android.bp b/media/libeffects/lvm/benchmarks/Android.bp
index 930292f..4f11a8a 100644
--- a/media/libeffects/lvm/benchmarks/Android.bp
+++ b/media/libeffects/lvm/benchmarks/Android.bp
@@ -1,6 +1,7 @@
 cc_benchmark {
     name: "lvm_benchmark",
     vendor: true,
+    host_supported: true,
     srcs: ["lvm_benchmark.cpp"],
     static_libs: [
         "libbundlewrapper",