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-x86/asm/apicdef_32.h b/libc/kernel/arch-x86/asm/apicdef_32.h
index 1f1bb2f..e73ff21 100644
--- a/libc/kernel/arch-x86/asm/apicdef_32.h
+++ b/libc/kernel/arch-x86/asm/apicdef_32.h
@@ -36,7 +36,7 @@
 #define APIC_PROCPRI 0xA0
 #define APIC_EOI 0xB0
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define APIC_EIO_ACK 0x0  
+#define APIC_EIO_ACK 0x0
 #define APIC_RRR 0xC0
 #define APIC_LDR 0xD0
 #define APIC_LDR_MASK (0xFF<<24)
@@ -53,7 +53,7 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_SPIV_APIC_ENABLED (1<<8)
 #define APIC_ISR 0x100
-#define APIC_ISR_NR 0x8  
+#define APIC_ISR_NR 0x8
 #define APIC_TMR 0x180
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define APIC_IRR 0x200