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/media/msm_mercury.h b/libc/kernel/common/media/msm_mercury.h
index 2c11d47..3a4599c 100644
--- a/libc/kernel/common/media/msm_mercury.h
+++ b/libc/kernel/common/media/msm_mercury.h
@@ -21,7 +21,7 @@
 #include <linux/types.h>
 #include <linux/ioctl.h>
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define MSM_MERCURY_HW_VERSION_REG 0x0004  
+#define MSM_MERCURY_HW_VERSION_REG 0x0004
 #define OUTPUT_H2V1 0
 #define OUTPUT_H2V2 1
 #define OUTPUT_BYTE 6