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/sn/io.h b/libc/kernel/arch-mips/asm/sn/io.h
index 2b8a101..a3c3e17 100644
--- a/libc/kernel/arch-mips/asm/sn/io.h
+++ b/libc/kernel/arch-mips/asm/sn/io.h
@@ -18,23 +18,23 @@
  ****************************************************************************/
 #ifndef _ASM_SN_IO_H
 #define _ASM_SN_IO_H
-#define IIO_ITTE_BASE 0x400160  
+#define IIO_ITTE_BASE 0x400160
 #define IIO_ITTE(bigwin) (IIO_ITTE_BASE + 8*(bigwin))
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define IIO_ITTE_OFFSET_BITS 5  
+#define IIO_ITTE_OFFSET_BITS 5
 #define IIO_ITTE_OFFSET_MASK ((1<<IIO_ITTE_OFFSET_BITS)-1)
 #define IIO_ITTE_OFFSET_SHIFT 0
-#define IIO_ITTE_WIDGET_BITS 4  
+#define IIO_ITTE_WIDGET_BITS 4
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IIO_ITTE_WIDGET_MASK ((1<<IIO_ITTE_WIDGET_BITS)-1)
 #define IIO_ITTE_WIDGET_SHIFT 8
-#define IIO_ITTE_IOSP 1  
+#define IIO_ITTE_IOSP 1
 #define IIO_ITTE_IOSP_MASK 1
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IIO_ITTE_IOSP_SHIFT 12
 #define HUB_PIO_MAP_TO_MEM 0
 #define HUB_PIO_MAP_TO_IO 1
-#define IIO_ITTE_INVALID_WIDGET 3  
+#define IIO_ITTE_INVALID_WIDGET 3
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IIO_ITTE_PUT(nasid, bigwin, io_or_mem, widget, addr)   REMOTE_HUB_S((nasid), IIO_ITTE(bigwin),   (((((addr) >> BWIN_SIZE_BITS) &   IIO_ITTE_OFFSET_MASK) << IIO_ITTE_OFFSET_SHIFT) |   (io_or_mem << IIO_ITTE_IOSP_SHIFT) |   (((widget) & IIO_ITTE_WIDGET_MASK) << IIO_ITTE_WIDGET_SHIFT)))
 #define IIO_ITTE_DISABLE(nasid, bigwin)   IIO_ITTE_PUT((nasid), HUB_PIO_MAP_TO_MEM,   (bigwin), IIO_ITTE_INVALID_WIDGET, 0)