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/ip32/mace.h b/libc/kernel/arch-mips/asm/ip32/mace.h
index c2c149d..759c863 100644
--- a/libc/kernel/arch-mips/asm/ip32/mace.h
+++ b/libc/kernel/arch-mips/asm/ip32/mace.h
@@ -18,7 +18,7 @@
  ****************************************************************************/
 #ifndef __ASM_MACE_H__
 #define __ASM_MACE_H__
-#define MACE_BASE 0x1f000000  
+#define MACE_BASE 0x1f000000
 struct mace_pci {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  volatile unsigned int error_addr;
@@ -182,13 +182,13 @@
 #define MACEISA_RINGBUFFERS_SIZE (8 * 4096)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  volatile unsigned long misc;
-#define MACEISA_FLASH_WE BIT(0)  
-#define MACEISA_PWD_CLEAR BIT(1)  
+#define MACEISA_FLASH_WE BIT(0)
+#define MACEISA_PWD_CLEAR BIT(1)
 #define MACEISA_NIC_DEASSERT BIT(2)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MACEISA_NIC_DATA BIT(3)
-#define MACEISA_LED_RED BIT(4)  
-#define MACEISA_LED_GREEN BIT(5)  
+#define MACEISA_LED_RED BIT(4)
+#define MACEISA_LED_GREEN BIT(5)
 #define MACEISA_DP_RAM_ENABLE BIT(6)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  volatile unsigned long istat;