libbinder_ndk: AIBinder_setInheritRt

Pipe through this option to libbinder_ndk. This was originally a HIDL
feature, enabled by default there. It was ported to libbinder, and it is
now exposed here.

Fixes: 209338827
Test: libbinder_ndk_unit_test (this test is also in VTS, so is
    binderLibTest which has a function test of this API)
Change-Id: I0dde73654b37a414b9267a857a958d19de79bc9d
diff --git a/libs/binder/ndk/libbinder_ndk.map.txt b/libs/binder/ndk/libbinder_ndk.map.txt
index 197c0a1..3824a1b 100644
--- a/libs/binder/ndk/libbinder_ndk.map.txt
+++ b/libs/binder/ndk/libbinder_ndk.map.txt
@@ -146,6 +146,7 @@
     AIBinder_Class_disableInterfaceTokenHeader;
     AIBinder_DeathRecipient_setOnUnlinked;
     AIBinder_isHandlingTransaction;
+    AIBinder_setInheritRt; # llndk
     AIBinder_setMinSchedulerPolicy; # llndk
     AParcel_marshal;
     AParcel_unmarshal;