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/ftape.h b/libc/kernel/common/linux/ftape.h
index 105a5f3..fa70baa 100644
--- a/libc/kernel/common/linux/ftape.h
+++ b/libc/kernel/common/linux/ftape.h
@@ -22,7 +22,7 @@
 #include <linux/types.h>
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/mtio.h>
-#define FT_SECTOR(x) (x+1)  
+#define FT_SECTOR(x) (x+1)
 #define FT_SECTOR_SIZE 1024
 #define FT_SECTORS_PER_SEGMENT 32
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
@@ -37,7 +37,7 @@
 #define FTAPE_SEL_MASK 3
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FTAPE_SEL(unit) ((unit) & FTAPE_SEL_MASK)
-#define FTAPE_NO_REWIND 4  
+#define FTAPE_NO_REWIND 4
 typedef union {
  struct {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */