sim/posix/backtrace: process host backtrace with critical section

backtrace() is not a signal safe

Signed-off-by: chao an <anchao@xiaomi.com>

arch/sim/src/sim/posix/sim_hostmisc.c

@@ -94,7 +94,13 @@ int host_backtrace(void** array, int size)
 #ifdef CONFIG_WINDOWS_CYGWIN
   return 0;
 #else
-  return backtrace(array, size);
+  uint64_t flags = up_irq_save();
+  int ret;
+
+  ret = backtrace(array, size);
+
+  up_irq_restore(flags);
+  return ret;
 #endif
 }