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/asm-generic/mman.h b/libc/kernel/common/asm-generic/mman.h
index 6eaf900..5a0242a 100644
--- a/libc/kernel/common/asm-generic/mman.h
+++ b/libc/kernel/common/asm-generic/mman.h
@@ -19,18 +19,18 @@
 #ifndef __ASM_GENERIC_MMAN_H
 #define __ASM_GENERIC_MMAN_H
 #include <asm-generic/mman-common.h>
-#define MAP_GROWSDOWN 0x0100  
+#define MAP_GROWSDOWN 0x0100
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define MAP_DENYWRITE 0x0800  
-#define MAP_EXECUTABLE 0x1000  
-#define MAP_LOCKED 0x2000  
-#define MAP_NORESERVE 0x4000  
+#define MAP_DENYWRITE 0x0800
+#define MAP_EXECUTABLE 0x1000
+#define MAP_LOCKED 0x2000
+#define MAP_NORESERVE 0x4000
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define MAP_POPULATE 0x8000  
-#define MAP_NONBLOCK 0x10000  
-#define MAP_STACK 0x20000  
-#define MAP_HUGETLB 0x40000  
+#define MAP_POPULATE 0x8000
+#define MAP_NONBLOCK 0x10000
+#define MAP_STACK 0x20000
+#define MAP_HUGETLB 0x40000
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define MCL_CURRENT 1  
-#define MCL_FUTURE 2  
+#define MCL_CURRENT 1
+#define MCL_FUTURE 2
 #endif