tpm2-abrmd: S80tpm2-abrmd: create pid file at startup

The start-stop-daemon invocation to start abrmd was missing the -m (make
pidfile) option, causing stop to fail.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 03be1db6637ac096a56bec4bc77524191451bc45)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/tpm2-abrmd/S80tpm2-abrmd

@@ -28,7 +28,7 @@ start() {
 	printf "Starting tpm2-abrmd: "
 	check_device
 	rm_stale_pidfile /var/run/tpm2-abrmd.pid /usr/sbin/tpm2-abrmd
-	start-stop-daemon -S -q -o -b -p /var/run/tpm2-abrmd.pid -c tss:tss -x /usr/sbin/tpm2-abrmd -- ${DAEMON_OPTS} || {
+	start-stop-daemon -S -q -o -b -m -p /var/run/tpm2-abrmd.pid -c tss:tss -x /usr/sbin/tpm2-abrmd -- ${DAEMON_OPTS} || {
 		echo "FAIL"
 		exit 1
 	}