Fix multi-threaded bug for TRANSPOSE_CONV2D.

Several transpose_conv2d tests are failing when doing multi-threaded
execution. The bug is fixed by add a mutex lock.

Bug: 117314990

Test: NeuralNetworksTest_mt_static
Change-Id: I30452d88e54d85bf20ac317bcf5c343226fcb9f1
Merged-In: I30452d88e54d85bf20ac317bcf5c343226fcb9f1
(cherry picked from commit cd58b430d2acb76a4014fa19a388c43517f8555b)
1 file changed
tree: 2cfa9c376b85322e8df99155b3f25f938977bd64
  1. nn/
  2. .clang-format
  3. CleanSpec.mk
  4. OWNERS
  5. PREUPLOAD.cfg