clatd: embed CLATD_VERSION directly in log string

Allows for:
  adbz shell strings /apex/com.android.tethering/bin/for-system/clatd | grep 'clat version'
to print:
  Starting clat version 1.7 on %s plat=%s v4=%s v6=%s
instead of:
  Starting clat version %s on %s plat=%s v4=%s v6=%s

(which is more useful for rapid development)

Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I4ba7458287837cb014950927f3c8ff18dac268fc
diff --git a/clatd/main.c b/clatd/main.c
index 7aa1671..e9bfe43 100644
--- a/clatd/main.c
+++ b/clatd/main.c
@@ -150,7 +150,7 @@
     exit(1);
   }
 
-  logmsg(ANDROID_LOG_INFO, "Starting clat version %s on %s plat=%s v4=%s v6=%s", CLATD_VERSION,
+  logmsg(ANDROID_LOG_INFO, "Starting clat version " CLATD_VERSION " on %s plat=%s v4=%s v6=%s",
          uplink_interface, plat_prefix ? plat_prefix : "(none)", v4_addr ? v4_addr : "(none)",
          v6_addr ? v6_addr : "(none)");