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/pci.h b/libc/kernel/common/linux/pci.h
index cecaf07..48487a8 100644
--- a/libc/kernel/common/linux/pci.h
+++ b/libc/kernel/common/linux/pci.h
@@ -26,9 +26,9 @@
 #define PCI_FUNC(devfn) ((devfn) & 0x07)
 #define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00)  
-#define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01)  
-#define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02)  
-#define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03)  
+#define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00)
+#define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01)
+#define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02)
+#define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif