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-mips/asm/lasat/lasat.h b/libc/kernel/arch-mips/asm/lasat/lasat.h
index aa255f6..d930114 100644
--- a/libc/kernel/arch-mips/asm/lasat/lasat.h
+++ b/libc/kernel/arch-mips/asm/lasat/lasat.h
@@ -131,7 +131,7 @@
 #define LASAT_BMID_SAFEPIPE1000 7
 #define LASAT_BMID_UNKNOWN 0xf
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define LASAT_MAX_BMID_NAMES 9  
+#define LASAT_MAX_BMID_NAMES 9
 #define LASAT_HAS_EDHAC (1 << 0)
 #define LASAT_EDHAC_FAST (1 << 1)
 #define LASAT_HAS_EADI (1 << 2)