Add a link from runtime ns to the neuralnetworks ns

libneuralnetworks.so could be preloaded by libnativeloader. In that case,
it should be accessible from libnativeloader which runs in the
art namespace.

Bug: 141847343
Test: m, device boots
Test: run vm-tests-tf
Change-Id: I68507d5f00e4e60bc18ea9ffd5093b019d2ec559
1 file changed