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
1 file changed