Add functionlity to the scripts to replace tokens in kernel headers
based on architecture.
diff --git a/libc/kernel/arch-mips/asm/fcntl.h b/libc/kernel/arch-mips/asm/fcntl.h
index 73de4ad..996f996 100644
--- a/libc/kernel/arch-mips/asm/fcntl.h
+++ b/libc/kernel/arch-mips/asm/fcntl.h
@@ -47,8 +47,8 @@
  short l_type;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  short l_whence;
- off_t l_start;
- off_t l_len;
+ __kernel_off_t l_start;
+ __kernel_off_t l_len;
  long l_sysid;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __kernel_pid_t l_pid;