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/sibyte/bcm1480_int.h b/libc/kernel/arch-mips/asm/sibyte/bcm1480_int.h
index b14f1ca..276e569 100644
--- a/libc/kernel/arch-mips/asm/sibyte/bcm1480_int.h
+++ b/libc/kernel/arch-mips/asm/sibyte/bcm1480_int.h
@@ -244,7 +244,7 @@
 #define M_BCM1480_INT_GPIO_13 _BCM1480_INT_MASK1(K_BCM1480_INT_GPIO_13)
 #define M_BCM1480_INT_GPIO_14 _BCM1480_INT_MASK1(K_BCM1480_INT_GPIO_14)
 #define M_BCM1480_INT_GPIO_15 _BCM1480_INT_MASK1(K_BCM1480_INT_GPIO_15)
-#define K_BCM1480_INT_MAP_I0 0  
+#define K_BCM1480_INT_MAP_I0 0
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define K_BCM1480_INT_MAP_I1 1
 #define K_BCM1480_INT_MAP_I2 2
@@ -252,8 +252,8 @@
 #define K_BCM1480_INT_MAP_I4 4
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define K_BCM1480_INT_MAP_I5 5
-#define K_BCM1480_INT_MAP_NMI 6  
-#define K_BCM1480_INT_MAP_DINT 7  
+#define K_BCM1480_INT_MAP_NMI 6
+#define K_BCM1480_INT_MAP_DINT 7
 #define S_BCM1480_INT_HT_INTMSG 0
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define M_BCM1480_INT_HT_INTMSG _SB_MAKEMASK(3, S_BCM1480_INT_HT_INTMSG)