File watchdogd.service.mk from the latest check-in

DAEMON_watchdogd_COMMAND?=/usr/sbin/watchdogd
DAEMON_watchdogd_FOREGROUND?=-d

.if empty(:!sysctl -qn debug.watchdog || exit 0!)
DAEMON_watchdogd_ENABLE=no
.endif

watchdogd: ${_EARLYSERVICE}