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: Id5691b02c107ed7b844a186f0a5effa3cb0fe52a
diff --git a/libc/Android.bp b/libc/Android.bp
index 4d35592..a6a7780 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -1774,6 +1774,12 @@
     ramdisk_available: true,
     recovery_available: true,
     native_bridge_supported: true,
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.runtime",
+        "com.android.art.debug",
+        "com.android.art.release",
+    ],
 
     no_libcrt: true,
     stl: "none",
@@ -1905,6 +1911,10 @@
     ramdisk_available: true,
     recovery_available: true,
     native_bridge_supported: true,
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
 
     cflags: [
         "-Wno-gcc-compat",