Implement add auth token functionality.

This CL implements the functionality related to adding an auth token
to auth token table in keystore.

Bug: 171503352
Test: TBD
Change-Id: Ide4150ffcb4bc51b062afa44c82cb0a89b0ee689
diff --git a/keystore2/Android.bp b/keystore2/Android.bp
index 7bd3c77..ef3220b 100644
--- a/keystore2/Android.bp
+++ b/keystore2/Android.bp
@@ -24,6 +24,7 @@
         "libbinder_rs",
         "libkeystore2_selinux",
         "liblazy_static",
+        "liblibc",
         "liblibsqlite3_sys",
         "liblog_rust",
         "librand",
@@ -47,6 +48,7 @@
         "libbinder_rs",
         "libkeystore2_selinux",
         "liblazy_static",
+        "liblibc",
         "liblibsqlite3_sys",
         "liblog_rust",
         "librand",