Name function arguments in libc headers for Studio.

Second batch of headers...

Bug: http://b/64613623
Test: builds
Change-Id: I8eef043dbf32afee8ff814e9d005f46aee8fa21f
diff --git a/libc/include/sys/klog.h b/libc/include/sys/klog.h
index 47eb3a4..ed746fc 100644
--- a/libc/include/sys/klog.h
+++ b/libc/include/sys/klog.h
@@ -46,8 +46,8 @@
 #define KLOG_SIZE_UNREAD   9
 #define KLOG_SIZE_BUFFER   10
 
-int klogctl(int, char *, int);
+int klogctl(int __type, char* __buf, int __buf_size);
 
 __END_DECLS
 
-#endif /* _SYS_KLOG_H_ */
+#endif