syscalls: add 'pragma export' to script that generates header

Otherwise it gets lost every time the header is regenerated

Follow-up for 3111327ca4a537454e40dae2a484c043bb89f7f7

diff --git a/src/include/override/sys/generate-syscall.py b/src/include/override/sys/generate-syscall.py
index e715bbb157eb8938eb37e07dfd5db23b2f3bf819..e5ca97272648e2faec06b7a619757edef767ee88 100755 (executable)
--- a/src/include/override/sys/generate-syscall.py
+++ b/src/include/override/sys/generate-syscall.py
@@ -45,7 +45,7 @@ HEADER = '''\
  */
 #pragma once
 
-#include_next <sys/syscall.h>
+#include_next <sys/syscall.h>   /* IWYU pragma: export */
 
 #ifdef ARCH_MIPS
 #include <asm/sgidefs.h>