[NRF51822 Target] Write in binary mode

Author: emilmont

workspace_tools/targets.py

@@ -431,7 +431,7 @@ def binary_hook(t_self, resources, elf, binf):
         # Remove UICR section
         del sdh[NRF51822.UICR_START:NRF51822.UICR_END+1]
 
-        with open(binf, "w") as f:
+        with open(binf, "wb") as f:
             sdh.tofile(f, format = 'bin')