Mark libtextclassifer_hash as double_loadable

libtextclassifer_hash is a vendor_available lib
and also used by LLNDK(libneuralnetworks) which means
this lib can be double-loaded.

Bug: 121280180
Test: m -j
Change-Id: Ib9c93bdb6dbd1b007510c925125066ce92b4ce87
1 file changed