Make whisper-tflite and precise-lite-runner use 2 threads

buildroot-external/package/python-precise-lite-runner/0001-Try-to-use-2-threads.patch

@@ -1,7 +1,7 @@
 From bdf1875bcd4e34766d45a6514ec9fed9d2cf1a9a Mon Sep 17 00:00:00 2001
 From: j1nx <p.steenbergen@j1nx.nl>
 Date: Wed, 8 Jun 2022 11:44:11 +0200
-Subject: [PATCH 1/1] Try to use 4 threads Tensorflow v2.3.0+ supports
+Subject: [PATCH 1/1] Try to use 2 threads Tensorflow v2.3.0+ supports
  multithreading.
 
 ---
@@ -17,7 +17,7 @@ index 7e56a30..0aadf73 100644
          #  Setup tflite environment
          self.interpreter = tflite.Interpreter(model_path=model_name)
 +        try:
-+            self.interpreter.set_num_threads(4)
++            self.interpreter.set_num_threads(2)
 +        except:
 +            pass
 +

buildroot-external/package/whisper-tflite/0002-Add-multithread-support.patch

@@ -0,0 +1,25 @@
+From 4aa7797f8f043df84104b76ceca423832824ea13 Mon Sep 17 00:00:00 2001
+From: j1nx <p.steenbergen@j1nx.nl>
+Date: Fri, 9 Dec 2022 20:25:46 +0100
+Subject: [PATCH 1/1] Add multithread support
+
+---
+ tflite_minimal/minimal.cc | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/tflite_minimal/minimal.cc b/tflite_minimal/minimal.cc
+index cd045e0..82e9b11 100644
+--- a/tflite_minimal/minimal.cc
++++ b/tflite_minimal/minimal.cc
+@@ -200,6 +200,8 @@ int main(int argc, char* argv[]) {
+   else if (argc == 3) {
+     memcpy(input, mel.data.data(), mel.n_mel*mel.n_len*sizeof(float));
+   }
++  interpreter->SetNumThreads(2);
++
+   // Fill input buffers
+   // TODO(user): Insert code to fill input tensors.
+   // Note: The buffer of the input tensor with index `i` of type T can
+-- 
+2.34.1
+