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/ipmi_msgdefs.h b/libc/kernel/common/linux/ipmi_msgdefs.h
index 33a372c..e2a1674 100644
--- a/libc/kernel/common/linux/ipmi_msgdefs.h
+++ b/libc/kernel/common/linux/ipmi_msgdefs.h
@@ -42,7 +42,7 @@
 #define IPMI_ADD_SEL_ENTRY_CMD 0x44
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPMI_BMC_SLAVE_ADDR 0x20
-#define IPMI_MAX_MSG_LENGTH 272  
+#define IPMI_MAX_MSG_LENGTH 272
 #define IPMI_CC_NO_ERROR 0x00
 #define IPMI_NODE_BUSY_ERR 0xc0
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */