Convert libvisualizer from Android.mk to Android.bp

Test: builds OK, Clarity, EffectsTest
Change-Id: Ib2c282a2b4f36f1067383609b5c6da9f763e262b
diff --git a/media/libeffects/visualizer/Android.bp b/media/libeffects/visualizer/Android.bp
new file mode 100644
index 0000000..f6c585e
--- /dev/null
+++ b/media/libeffects/visualizer/Android.bp
@@ -0,0 +1,32 @@
+// Visualizer library
+cc_library_shared {
+    name: "libvisualizer",
+
+    vendor: true,
+
+    srcs: [
+        "EffectVisualizer.cpp",
+    ],
+
+    cflags: [
+        "-O2",
+        "-fvisibility=hidden",
+
+        "-DBUILD_FLOAT",
+        "-DSUPPORT_MC",
+
+        "-Wall",
+        "-Werror",
+    ],
+
+    shared_libs: [
+        "liblog",
+    ],
+
+    relative_install_path: "soundfx",
+
+    header_libs: [
+        "libaudioeffects",
+        "libaudioutils_headers",
+    ],
+}