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/moduleparam.h b/libc/kernel/common/linux/moduleparam.h
index b46cdd2..a5677aa 100644
--- a/libc/kernel/common/linux/moduleparam.h
+++ b/libc/kernel/common/linux/moduleparam.h
@@ -23,7 +23,7 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/kernel.h>
 #ifdef MODULE
-#define MODULE_PARAM_PREFIX  
+#define MODULE_PARAM_PREFIX
 #else
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MODULE_PARAM_PREFIX KBUILD_MODNAME "."