Set apex_available property

The marked library(ies) were available to the APEXes via the hand-written
whitelist in build/soong/apex/apex.go. Trying to remove the whitelist
by adding apex_available property to the Android.bp of the libraries.

Bug: 150999716
Test: m
Change-Id: I60e1ae6fa837772c2682d4a26ea34bd80e69bc9e
diff --git a/Android.bp b/Android.bp
index 4e30d2c..c6f65be 100644
--- a/Android.bp
+++ b/Android.bp
@@ -57,6 +57,10 @@
     vendor_available: true,
     ramdisk_available: true,
     recovery_available: true,
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
     native_bridge_supported: true,
     srcs: [
         "src/algorithm.cpp",
@@ -114,6 +118,10 @@
     },
     ramdisk_available: true,
     recovery_available: true,
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
     whole_static_libs: ["libc++_static"],
     stl: "none",