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/common/linux/if_tr.h b/libc/kernel/common/linux/if_tr.h
index 7e97d51..4b16c02 100644
--- a/libc/kernel/common/linux/if_tr.h
+++ b/libc/kernel/common/linux/if_tr.h
@@ -18,8 +18,8 @@
  ****************************************************************************/
 #ifndef _LINUX_IF_TR_H
 #define _LINUX_IF_TR_H
-#include <asm/byteorder.h>  
-#define TR_ALEN 6  
+#include <asm/byteorder.h>
+#define TR_ALEN 6
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TR_HLEN (sizeof(struct trh_hdr)+sizeof(struct trllc))
 #define AC 0x10
@@ -78,8 +78,8 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TR_RCF_DIR_BIT 0x80
 #define TR_RCF_LEN_MASK 0x1f00
-#define TR_RCF_BROADCAST 0x8000  
-#define TR_RCF_LIMITED_BROADCAST 0xC000  
+#define TR_RCF_BROADCAST 0x8000
+#define TR_RCF_LIMITED_BROADCAST 0xC000
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TR_RCF_FRAME2K 0x20
 #define TR_RCF_BROADCAST_MASK 0xC000