Clean up trailing whitespace in the kernel headers.

And fix the scripts so they stop letting trailing whitespace through.

Change-Id: Ie109fbe1f63321e565ba0fa60fee8e9cf3a61cfc
diff --git a/libc/kernel/arch-x86/asm/sockios.h b/libc/kernel/arch-x86/asm/sockios.h
index d8bd1a3..d0829db 100644
--- a/libc/kernel/arch-x86/asm/sockios.h
+++ b/libc/kernel/arch-x86/asm/sockios.h
@@ -24,7 +24,7 @@
 #define FIOGETOWN 0x8903
 #define SIOCGPGRP 0x8904
 #define SIOCATMARK 0x8905
-#define SIOCGSTAMP 0x8906  
+#define SIOCGSTAMP 0x8906
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define SIOCGSTAMPNS 0x8907  
+#define SIOCGSTAMPNS 0x8907
 #endif