Pin zephr to particular commit to avoid new pthread code

anujdeshpande · cfriedt · commit 618b4fa449e9 · 2021-05-13T14:33:47.000-04:00
diff --git a/west.yml b/west.yml
@@ -7,5 +7,5 @@ manifest:
   projects:
     - name: zephyr
       remote: zephyrproject-rtos
-      revision: master
+      revision: fc1b5de4c307a97023520f27058f19db09c4face
       import: true
