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/ipx.h b/libc/kernel/common/linux/ipx.h
index 1396988..0f85e5c 100644
--- a/libc/kernel/common/linux/ipx.h
+++ b/libc/kernel/common/linux/ipx.h
@@ -56,7 +56,7 @@
 #define IPX_FRAME_ETHERII 3
 #define IPX_FRAME_8023 4
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define IPX_FRAME_TR_8022 5  
+#define IPX_FRAME_TR_8022 5
  unsigned char ipx_special;
 #define IPX_SPECIAL_NONE 0
 #define IPX_PRIMARY 1