Mark as recovery_available: true

Libraries that are direct or indirect dependencies of modules installed
to recovery partition (e.g. toybox) are marked as recovery_available:
true. This allows a recovery variant of the lib is created when it is
depended by other recovery or recovery_available modules.

Bug: 67916654
Bug: 64960723
Test: m -j
Change-Id: Id5bf736a9fc1e88cd73754213af896edc0870a96
diff --git a/Android.bp b/Android.bp
index ccf2cb2..19f8a11 100644
--- a/Android.bp
+++ b/Android.bp
@@ -24,6 +24,7 @@
     host_supported: true,
     static_ndk_lib: true,
     vendor_available: true,
+    recovery_available: true,
     sdk_version: "minimum",
     // The following list contains functions that are not available in libgcc.a, so
     // we potentially need them when using a Clang-built component (e.g., -ftrapv